# Enginerys — full reference

> Enginerys is a free search engine for laptop, desktop and phone repair files: schematics, boardviews and BIOS dumps shared in public Telegram channels, indexed daily by board number, brand and format. Index: 483,148 files, 8,343 board numbers, 170 Telegram channels. Updated 2026-11-13. Short version: https://enginerys.com/llms.txt

Search: https://enginerys.com/search/?q={query} · JSON: https://enginerys.com/api/search.json?q={query}

# Guides

## How to open boardview files (.brd, .bdv, .fz, .cad, .tvw)

URL: https://enginerys.com/guides/how-to-open-boardview-files/

**Summary:** Install OpenBoardView (free, Windows / macOS / Linux) — it opens .brd, .bdv, .bv, .bvr, .cad, .fz, .asc, .cst and .f2b files directly. Use BoardViewer or FlexBV for Tebo .tvw files that OpenBoardView cannot read, and the Cadence Allegro Free Physical Viewer for native Allegro .brd databases.

### The short answer

| Extension | Typical boards | Free viewer that opens it |
| --- | --- | --- |
| `.brd` | Apple, Lenovo, many others | OpenBoardView |
| `.bdv` | HP, Sony, Foxconn-built boards | OpenBoardView |
| `.cad` | Compal, Quanta, Wistron (Dell, HP, Acer, Lenovo) | OpenBoardView |
| `.fz` | ASUS, ASRock, Pegatron | OpenBoardView (needs the FZ key) or BoardViewer |
| `.asc` | ASUS (folder of several files) | OpenBoardView |
| `.tvw` | Gigabyte, MSI, newer laptops | BoardViewer, FlexBV |
| `.bvr`, `.bv`, `.cst`, `.f2b` | Lenovo, MSI, Clevo, older boards | OpenBoardView |
| `.pcb` | Phones, recent laptops (XZZ) | XZZ viewer, recent OpenBoardView / FlexBV |

There is a page for every extension in the [format reference](https://enginerys.com/formats/).

### Set up OpenBoardView

1. Download the latest release from [openboardview.org](https://openboardview.org/) and unpack it — there is no installer.
2. Start the program and drag the boardview file onto the window, or use **File → Open**.
3. Press **Ctrl+F** (or just start typing) and enter a component name such as `PQ12` or a net name such as `+3VALW`. The view jumps to the part and highlights every pad on the same net.
4. Press **Space** to flip the board and see the other side.

Useful keys: mouse wheel zooms, right-drag pans, `R` rotates, `M` mirrors, `N` opens the net list.

### When a file does not open

**"Unknown file format" on a .brd.** The extension is shared by several unrelated formats. Open the file in a text editor: readable text means a repair boardview that should load; binary content and a size of tens of megabytes means a native Cadence Allegro database, which needs the Allegro Free Physical Viewer.

**An .fz file opens as an empty board.** FZ files are encrypted. OpenBoardView needs the FZ key entered once in its settings file; BoardViewer and FlexBV have it built in.

**An .asc file loads only partly.** ASC boardviews are a set of files (`format.asc`, `parts.asc`, `pins.asc`, `nails.asc`). Unpack the whole archive into one folder and open any one of them.

**A .tvw file fails in OpenBoardView.** Tebo files exist in several versions. Try BoardViewer or FlexBV, both of which have broader TVW support.

**The archive contains only a PDF.** That is a schematic, not a boardview. Search Enginerys for the same board number and filter by **Boardviews**.

### Work with the schematic side by side

A boardview tells you *where* a part is; the schematic tells you *what it does*. Open the PDF next to the viewer, search the schematic for the net you are chasing, then type the same net name into the boardview to see every place it can be probed. FlexBV can link the two so that a click in one moves the other.

> Boardviews are built for one exact board revision. If component names in the viewer do not match the silk-screen on your board, you have a file for a different revision — search again with the full board number, including the revision.

## How to find the board number on a laptop motherboard

URL: https://enginerys.com/guides/find-motherboard-board-number/

**Summary:** The board number is printed in white silk-screen or on a copper label on the motherboard itself — usually near the RAM slots, under the keyboard side, or along an edge. It looks like LA-E891P (Compal), NM-B452 (LCFC / Lenovo), DA0X8BMB6F0 (Quanta), 6050A2945701 (Inventec) or 820-00165 (Apple). Search for that number, not the laptop model.

### Why the model name is not enough

A retail name such as "HP 15-bs" or "IdeaPad 320-15" covers many configurations: Intel and AMD versions, integrated and discrete graphics, sometimes boards from two different factories. Each of those is a separate design with its own schematic. The board number identifies one design exactly.

### Where to look

- **Around the memory slots.** The most common place: lift the RAM and look at the silk-screen beside or under it.
- **Under the battery or the bottom cover.** Often visible as soon as the cover is off.
- **Along the board edge near a corner**, next to the revision and a date code.
- **On the keyboard side.** Some boards are printed only on the top, so the board has to come out.
- **Under a black sticker or mylar sheet.** Peel a corner back carefully.

Ignore long barcode stickers — those are serial and spare-part numbers. The board number is etched or printed on the PCB.

### What each manufacturer's number looks like

| Pattern | Factory | Example | Brands that use it |
| --- | --- | --- | --- |
| `LA-xxxxP` | Compal | LA-E891P | HP, Dell, Acer, Lenovo, Toshiba |
| `NM-xxxx` | LCFC | NM-B452 | Lenovo |
| `DA0xxxMBxxx` | Quanta | DA0X8BMB6F0 | HP, Acer, Dell, Lenovo |
| `xxxxx-x` + project name | Wistron | 17806-1 | Dell, Lenovo, Acer, HP |
| `6050Axxxxxxx` | Inventec / Foxconn | 6050A2945701 | HP, Toshiba |
| `60NBxxxx-MBxxxx` | ASUS / Pegatron | 60NB0QJ0-MB5101 | ASUS |
| `MS-xxxxx` | MSI | MS-16J91 | MSI |
| `820-xxxxx` | Apple | 820-00165 | MacBook, iMac |
| `BA41-xxxxxA` | Samsung | BA41-02206A | Samsung |
| `6-71-xxxxx` | Clevo | 6-71-N85H0-D02 | Clevo, Sager and rebrands |

More detail is in [board number prefixes by manufacturer](https://enginerys.com/guides/board-number-prefixes-by-manufacturer/).

### Note the revision too

Next to the number you will usually find `REV: 1.0`, `Rev A00` or a letter suffix. Revisions can move or rename components, so when two files exist, pick the one that matches yours. If only another revision is available it is still useful — the circuit is normally the same — but double-check part names.

### Then search

Type the number into the [search box](https://enginerys.com/search/) exactly as printed. Enginerys also understands it without the dash (`LAE891P`) and shows a single [board page](https://enginerys.com/boards/) that gathers every schematic, boardview and BIOS dump seen for it.

### Desktop boards and phones

Desktop motherboards carry the model name and a PCB revision (`REV 1.03`) between the expansion slots. Phones are identified by the model code on the back cover or in the SIM tray — for example `SM-A515F` — and by the board marking under the shields.

## Schematic vs boardview: what each file is for

URL: https://enginerys.com/guides/schematic-vs-boardview/

**Summary:** A schematic is the electrical diagram of a board — it shows how components connect and what voltages to expect. A boardview is the physical map — it shows where each component and net sits on the PCB. You read the schematic to decide what to measure and use the boardview to find where to put the probe.

### The schematic

A schematic is a multi-page PDF drawn by the engineers who designed the board. Each page covers one function: the charger, the 3 V / 5 V supply, the CPU core supply, memory, USB, display, and so on. It gives you:

- **Connections** — which pin of which chip goes where.
- **Net names** — labels such as `+3VALW`, `PP3V3_S5` or `VCCST_PWRGD` that follow a signal across pages.
- **Values** — resistor, capacitor and inductor values, and the part numbers of ICs.
- **Expected voltages and the power sequence** — usually on the first pages.

What it does not tell you is where anything is on the real board.

### The boardview

A boardview is a data file exported from the factory's test or layout software. Opened in a viewer, it draws the PCB with every component outline and pad. Click a pad and the viewer shows its net and lights up every other pad on that net, on both sides of the board.

What it does not tell you is why the part is there or what value it should have.

### Using them together: an example

A laptop has no 3.3 V standby rail.

1. In the **schematic**, find the 3 V / 5 V supply page. It shows controller `PU301` producing `+3VALW` through coil `PL302`, enabled by a signal called `EN_3V`.
2. In the **boardview**, search for `PL302`. The viewer jumps to the coil near the edge of the board.
3. Measure there. If the coil reads a few ohms to ground, the rail is shorted. Click the `+3VALW` net in the boardview to list every capacitor on it — those are the suspects.
4. If there is no short, go back to the schematic, check which pin of `PU301` receives `EN_3V`, find that pin in the boardview, and measure the enable signal.

Without the schematic you would not know what to check; without the boardview you would spend the time hunting for parts under a microscope.

### Which one do you need?

| Task | Schematic | Boardview |
| --- | --- | --- |
| Understand why a rail is missing | Yes | — |
| Find a component on the board | — | Yes |
| Trace a short on a power rail | Helpful | Yes |
| Identify a burnt, unreadable part | Yes (value) | Yes (name) |
| Check a connector pinout | Yes | Helpful |

In practice, download both. On Enginerys the [board pages](https://enginerys.com/boards/) list the schematics and boardviews for one board number together.

### Other files you will meet

- **BIOS / EC dumps** (`.bin`) — firmware images, see [how to flash a BIOS chip with a CH341A](https://enginerys.com/guides/flash-bios-chip-with-ch341a/).
- **Datasheets** — the manufacturer's document for a single chip: pinout, typical circuit, voltage thresholds.
- **Power-sequence diagrams** — sometimes shared separately; they summarise the start-up order from the schematic's first pages.

## How to read a laptop schematic

URL: https://enginerys.com/guides/how-to-read-laptop-schematics/

**Summary:** Start with the block diagram and the power-sequence page, learn the standby rails (+3VALW, +5VALW or their equivalents), then follow net names with Ctrl+F from page to page. A laptop schematic is read as a chain — adapter input, charger, always-on rails, enable signals, main rails, CPU power, reset — and a fault is the first link that is missing.

### How a schematic is organised

Nearly every laptop schematic follows the same order:

1. **Cover and index** — board name, revision, page list.
2. **Block diagram** — every major chip and the bus between them, with page references.
3. **Power map and power sequence** — which regulator makes which rail, and in what order.
4. **CPU, chipset (PCH), memory** — mostly pin tables.
5. **Peripherals** — display, storage, USB, audio, LAN, embedded controller (EC).
6. **Power pages** — DC-in, charger, 3 V / 5 V, memory, chipset and CPU core supplies.
7. **Change history.**

Read pages 2 and 3 before anything else. They are the map for the rest.

### Net names carry the signal between pages

A wire that leaves a page is not drawn across the document; it gets a name. The same name on another page is the same electrical node. Use the PDF search (Ctrl+F) on the name to see every page where it appears.

Typical power-net names:

| Name (varies by factory) | Meaning |
| --- | --- |
| `VIN`, `+19VB`, `PPBUS_G3H` | Main input bus after the adapter / battery selector |
| `+3VALW`, `+3VL`, `PP3V3_G3H` | 3.3 V always-on: present whenever a power source is connected |
| `+5VALW`, `PP5V_S5` | 5 V standby |
| `+3VS`, `+5VS`, `PP3V3_S0` | Rails present only when the system is running (S0) |
| `+1.2V`, `+VDDQ`, `+0.6VS` | Memory supply and termination |
| `+VCCCORE`, `+VCORE`, `PPVCC_S0_CPU` | CPU core voltage |

Suffixes describe the power state: `ALW` / `G3H` (always), `SUS` / `S5` (standby), `S3` (sleep), `S0` or plain `S` (running).

### Enable and power-good signals

Each regulator has an **enable** input (`EN`, `ON`, `SUSP#`) and most produce a **power-good** output (`PGOOD`, `PWRGD`). The power sequence is a relay race: the power-good of one stage becomes, directly or through the EC, the enable of the next. A `#` or a `_N` after a name means active-low — the signal is "on" when it is at 0 V.

### Follow the chain

When a board does not start, walk the sequence in order and stop at the first thing that is missing:

1. Adapter voltage at the DC jack and after the input MOSFETs.
2. Main bus (`VIN`).
3. Always-on 3.3 V and 5 V.
4. EC supply, EC reset and EC clock.
5. Power button reaching the EC, then the EC asking the chipset to wake (`PWRBTN#`).
6. Chipset answering with `SLP_S4#` / `SLP_S3#` going high.
7. Main rails, then CPU core voltage.
8. `PWROK` / `SYS_PWROK`, then `PLTRST#` released.

The page that produces the first missing item is where the fault lives, or where it is being held off by a protection circuit.

### Reading a power page

A switching regulator page always has the same parts: the controller IC, two MOSFETs (high-side and low-side), an inductor, output capacitors and a feedback divider. Measure, in this order: input voltage on the high-side MOSFET, the controller's own supply, the enable pin, then the output at the inductor. An output of zero with input and enable present points at the controller or a shorted output; resistance to ground at the inductor tells you which.

### Practical tips

- Component prefixes: `PU` / `U` chips, `PQ` / `Q` transistors, `PL` / `L` inductors, `PC` / `C` capacitors, `PR` / `R` resistors, `PD` / `D` diodes, `PJ` / `J` jumpers and connectors. A leading `P` means the part belongs to the power section.
- `@` or `NC` / `DNP` next to a part means it is not fitted on this variant.
- Take voltages from the schematic as nominal. Compare with a known-good board whenever you can.
- Keep the [boardview](https://enginerys.com/guides/how-to-open-boardview-files/) open beside the PDF so you can go from a part name to its location immediately.

## Board number prefixes by manufacturer (Compal, Quanta, Wistron, LCFC…)

URL: https://enginerys.com/guides/board-number-prefixes-by-manufacturer/

**Summary:** Laptop brands do not build their own motherboards — factories called ODMs do, and each ODM has its own numbering scheme. LA-xxxxP is Compal, NM-xxxx is LCFC (Lenovo), DA0xxxMBxxx is Quanta, a five-digit number with a dash is Wistron, 6050A… is Inventec, 60NB…-MB… is ASUS, MS-xxxxx is MSI and 820-xxxxx is Apple.

### Why the factory matters

HP, Dell, Lenovo and Acer design the product, but the board is engineered and manufactured by an **ODM** (original design manufacturer). Documentation is produced by the ODM in the ODM's format, which is why the factory decides both the board number style and the boardview file type you will be looking for.

### Reference table

| ODM | Number format | Example | Usual boardview format | Seen in |
| --- | --- | --- | --- | --- |
| Compal | `LA-` + 4 characters + `P` | LA-E891P, LA-K371P | `.cad` | HP, Dell, Acer, Lenovo, Toshiba |
| LCFC (Lenovo–Compal venture) | `NM-` + letter + 3 digits | NM-B452, NM-D191 | `.cad`, `.brd` | Lenovo IdeaPad, ThinkPad, Legion |
| Quanta | `DA0` + 3-character project code + `MB` + suffix | DA0X8BMB6F0, DA0LX6MB6G2 | `.brd`, `.cad`, `.bdv` | HP, Acer, Dell, Lenovo |
| Wistron | 5-digit number + `-` + revision, plus a project name | 17806-1, 09259-1M | `.brd`, `.cad` | Dell, Lenovo, Acer, HP |
| Inventec | `6050A` + 7 digits | 6050A2945701 | `.brd`, `.tvw` | HP, Toshiba |
| ASUS / Pegatron | `60NB` + 4 characters + `-MB` + 4 digits | 60NB0QJ0-MB5101 | `.fz`, `.asc` | ASUS, some Lenovo and Acer |
| MSI | `MS-` + 4–5 characters | MS-16J91, MS-7B86 | `.tvw`, `.bvr` | MSI laptops and desktops |
| Apple | `820-` + 4–5 digits (+ letter) | 820-00165, 820-3437-B | `.brd` | MacBook, iMac, Mac mini |
| Samsung | `BA41-` + 5 digits + letter | BA41-02206A | `.brd`, `.pdf` only | Samsung |
| Sony | `MBX-` + 3 digits | MBX-247 | `.bdv`, `.brd` | Sony Vaio |
| Clevo | `6-71-` + project code | 6-71-N85H0-D02 | `.bvr`, `.tvw` | Clevo, Sager, Gigabyte / Medion rebrands |

### Reading the numbers

**Compal `LA-xxxxP`.** The four characters are a running design number; newer boards have a letter in first position (LA-E…, LA-K…, LA-M…). The schematic cover also shows a project code such as `CDL50`.

**Quanta `DA0xxxMBxxx`.** The three characters after `DA0` are the project code, which is also the name on the schematic (`X8B`, `LX6`, `ZRT`). The characters after `MB` encode the layer count and revision. Searching the project code alone often finds more files than the full string.

**Wistron `xxxxx-x`.** The first two digits of the five-digit number follow the design year (`17806-1` dates from 2017). Wistron boards also carry a project name — often a person or place name such as "Bucky" or "Astro" — and that name is what the schematic file is usually called.

**Apple `820-xxxxx`.** Older boards have four digits and a letter revision (`820-3437-B`), newer ones five digits (`820-00165`, `820-02020`). The companion number starting with `051-` is the schematic's own document number.

### Brand-level part numbers are different

Stickers on the board carry the brand's spare-part number: HP `xxxxxx-001` / `-601`, Lenovo `FRU 5B20…`, Dell `CN-0xxxxx`. Those identify a stocked assembly — board plus CPU and options — and are useful for buying a replacement, not for finding a schematic. If the sticker number is all you have, search it anyway: uploaders sometimes include it in the file name.

### Finding files once you know the number

Enter the number in the [search](https://enginerys.com/search/), or browse the [board index](https://enginerys.com/boards/), which groups every recognised number by ODM family. If nothing turns up for the full number, try the project code or the shorter base number without the revision.

## How to flash a BIOS chip with a CH341A programmer

URL: https://enginerys.com/guides/flash-bios-chip-with-ch341a/

**Summary:** Identify the flash chip and its voltage (3.3 V or 1.8 V), remove all power from the board, read the chip twice and confirm both reads are identical, save that backup, then write the new image and verify it. Use a 1.8 V adapter for low-voltage chips, and copy the serial number and licence data from your backup into the new image before writing.

> Writing firmware can leave a board unbootable. Nothing here replaces a verified backup of your own chip — make it before anything else.

### What you need

- A CH341A programmer (or RT809F/H, TL866II / T48, or any flashrom-supported device).
- A SOIC8 test clip for in-circuit work, or a soldering station to lift the chip.
- A **1.8 V adapter** if the chip is a low-voltage type.
- Software: NeoProgrammer or AsProgrammer on Windows, or [flashrom](https://flashrom.org/) on any system.

### 1. Identify the chip

The BIOS chip is an 8-pin part (SOP8, or leadless WSON8) usually marked with a 25-series name. Read the full marking and look up the datasheet.

| Marking examples | Capacity | Voltage |
| --- | --- | --- |
| W25Q64FV / JV, GD25Q64, MX25L6473 | 8 MB | 3.3 V |
| W25Q128FV / JV, GD25Q128, MX25L12873 | 16 MB | 3.3 V |
| W25Q64FW / JW, GD25LQ64, MX25U6435 | 8 MB | **1.8 V** |
| W25Q128FW / JW, GD25LQ128, MX25U12835 | 16 MB | **1.8 V** |
| W25Q256JW, MX25U25645 | 32 MB | **1.8 V** |

The letters matter: Winbond `…W`, GigaDevice `LQ` / `LB` and Macronix `U` parts are 1.8 V. Feeding them 3.3 V can destroy the chip.

Many boards have a second, smaller chip (often 1–2 MB) that holds the embedded-controller firmware. Know which one you are connected to.

### 2. Remove every power source

Unplug the charger, disconnect the main battery and the RTC coin cell. With a clip on a powered or back-fed board, reads are unreliable and the programmer may try to power half the motherboard.

### 3. Connect

Align pin 1 of the clip (red wire) with the dot on the chip. If the software cannot detect the chip, or two reads differ, in-circuit programming is not working on this board — desolder the chip and use a socket or adapter instead. That is common, not a sign of a dead chip.

A note on common black CH341A boards: many drive the data lines at 5 V even though the supply pin is 3.3 V. It usually works, but it is outside the chip's rating; a modified programmer or a different tool is safer for regular use.

### 4. Read twice and compare

With flashrom:

```
flashrom -p ch341a_spi -r backup1.bin
flashrom -p ch341a_spi -r backup2.bin
```

Compare the two files (checksums, or a hex editor's compare function). If they are identical and the size matches the chip (8 MB chip → exactly 8,388,608 bytes), you have a good backup. Keep it somewhere safe; it contains this machine's serial number, UUID, MAC address and Windows key.

A file full of `FF` or `00` means no contact, not an empty chip.

### 5. Prepare the new image

- The image must be for the **same board number and revision**, and the same size as the chip.
- A vendor update file (`.rom`, `.fd`, `.cap`, or an `.exe`) is not always a full image. Check its size and structure in UEFITool before writing.
- On Intel boards, prefer an image with a clean Management Engine region — see [what a clean ME region is](https://enginerys.com/guides/clean-me-region-explained/).
- Transfer the machine-specific data (DMI) from your backup, otherwise the board will report a foreign or empty serial number.

### 6. Write and verify

```
flashrom -p ch341a_spi -w new.bin
```

flashrom erases, writes and verifies in one step. In NeoProgrammer / AsProgrammer use **Erase → Write → Verify**, or the automatic sequence. Do not skip the verification.

### 7. First start

Reconnect the RTC battery, then the charger — leave the main battery out for the first boot. The first start after a firmware change can take a minute or more with a black screen while memory is retrained and the ME initialises. Let it finish before judging the result.

### If it still does not start

- Re-read the chip and compare with the file you wrote.
- Write your original backup back to confirm the programmer and chip are healthy.
- Check that the fault is really firmware: a board with a missing rail will not be fixed by a BIOS, however clean. See [how to read a laptop schematic](https://enginerys.com/guides/how-to-read-laptop-schematics/).

BIOS and EC dumps indexed by board number are listed under [BIOS & firmware](https://enginerys.com/bios/).

## What "ME clean" means in a BIOS dump

URL: https://enginerys.com/guides/clean-me-region-explained/

**Summary:** Intel boards store Management Engine (ME / CSME) firmware and its runtime data inside the BIOS chip. A dump taken from a working machine carries that machine's ME state, which can stop another board from starting. An "ME clean" dump has the ME region rebuilt to its factory, never-initialised state so it sets itself up on the first boot.

### The regions inside an Intel BIOS image

An Intel SPI flash image is divided into regions listed in a table at the start of the chip:

| Region | Contains |
| --- | --- |
| Descriptor | The layout of the chip and access permissions |
| ME / CSME | Management Engine firmware and its own data store |
| BIOS | The UEFI firmware, settings (NVRAM) and DMI data |
| GbE (optional) | Ethernet controller configuration, including the MAC address |
| EC (optional) | Embedded-controller firmware on some designs |

Open any dump in UEFITool to see them.

### Why the ME region causes trouble

The Management Engine is a small computer inside the chipset. During the very first boot at the factory it initialises itself and writes configuration and state into its region of the flash. From then on the region is "initialised" and tied to that hardware and its history.

Put that region on a different board — or on the same board after the chipset has been replaced — and the ME may find data that does not fit. Typical results are a board that powers on with no image, shuts down after about half a minute, or runs with the fans at full speed.

### What "clean" means

A clean ME region is one put back to the state it had before the first boot: correct firmware for the platform, correct configuration, no stored runtime data. On first power-up the ME initialises again as it did at the factory.

A proper clean is made by taking the stock ME firmware of the same version and SKU and rebuilding the region with Intel's Flash Image Tool, carrying over the settings of the original dump. It is **not** the same as filling the region with `FF`, and not the same as swapping in a region from another model.

File names in repair channels describe this in several ways: `ME clean`, `CSME clean`, `Clear ME`, `ME region cleaned`, sometimes with `+DMI` when the machine data has also been reset.

### When you need one

- After replacing the PCH / chipset or an SoC CPU.
- When using a dump taken from a different machine of the same board.
- When a board shows ME-type symptoms after a firmware corruption.

You do not need one when you are simply writing back your own good backup to the same, unmodified board.

### How to check a dump

[ME Analyzer](https://github.com/platomav/MEAnalyzer) reads a dump and reports the ME / CSME version, SKU and whether the data area is initialised or configured-only. Run it on a file before you trust the word "clean" in its name.

### AMD boards

AMD platforms have no Intel ME; the comparable component is the PSP, and "ME clean" does not apply. AMD dumps still carry DMI data and, on some laptops, variables that tie the firmware to the board, so the advice to use the exact board number stands.

### Putting it into practice

1. Back up your own chip — see [flashing with a CH341A](https://enginerys.com/guides/flash-bios-chip-with-ch341a/).
2. Find a dump for the exact board number under [BIOS & firmware](https://enginerys.com/bios/); file names that mention ME cleaning say so explicitly.
3. Verify it with ME Analyzer and UEFITool.
4. Move your serial number and licence data across, write, verify, and allow a long first boot.

## How to download repair files from Telegram safely

URL: https://enginerys.com/guides/download-repair-files-from-telegram-safely/

**Summary:** Open the post link, download the attachment in the Telegram app or Telegram Web, and check three things before using it — that the extension matches what you expected, that an archive contains documents rather than programs, and, for firmware, that you have a backup of your own chip. Never pay anyone who contacts you privately offering a file.

### How file posts work

Public Telegram channels publish files as ordinary message attachments. Each post has a permanent link of the form `t.me/channel/1234`. Enginerys stores that link for every file it indexes, so the **Telegram** button on a result opens the exact message.

- You need a Telegram account to download; you do not need to join the channel.
- Files stay on Telegram's servers. There is no download limit and no waiting timer.
- A single attachment can be up to 2 GB, so even large BIOS collections arrive as one file.

If a link opens a page that says the post or channel cannot be displayed, the channel has been made private or removed. Go back to the file page on Enginerys and try another source if one is listed.

### Check what you downloaded

**Extension.** A schematic should be a `.pdf`. A boardview should be one of the [known boardview formats](https://enginerys.com/formats/). A BIOS should be a `.bin` (or `.rom` / `.fd`) of 2, 4, 8, 16 or 32 MB.

**Archives.** `.rar`, `.zip` and `.7z` files usually wrap a schematic and boardview together. Unpack them and look before you open anything. Documents and data files are expected; an `.exe`, `.scr`, `.bat` or `.lnk` inside a "schematic" archive is a red flag — delete it.

**Passwords.** If an archive is protected, the password is normally in the caption of the Telegram post or in the channel description.

**Scan.** Run unknown archives and any software package through an antivirus scanner before use. Repair utilities are frequently flagged; treat that as a reason to run them only on a bench computer, not on your personal one.

### Firmware needs extra care

A wrong BIOS image will not harm your PC, but it can leave the board you are repairing unbootable.

- Read and save the original chip first, twice.
- Match the full board number and revision.
- Inspect the image with UEFITool and, on Intel boards, ME Analyzer.

The procedure is described in [how to flash a BIOS chip with a CH341A](https://enginerys.com/guides/flash-bios-chip-with-ch341a/).

### Avoid the common scams

- **Unsolicited private messages** offering a rare file, an unlock or a "premium" archive for a fee. Channel administrators do not message strangers first.
- **Look-alike channels** that copy the name and avatar of a popular one. Check the @username and the subscriber count against the [channel directory](https://enginerys.com/channels/).
- **Paid groups promoted inside free channels.** Some are genuine services; none are needed to get public documentation.

### Good manners

These channels are run by working technicians in their spare time. If a file helped you, share your own verified dumps and schematics back to the community — that is how the archive grows.

# File formats

## .brd — BRD boardview

URL: https://enginerys.com/formats/brd/

The most common boardview extension. Several unrelated formats share it, which is why one viewer opens a .brd and another refuses it.

In repair circles a .brd is usually the plain-text "Test_Link" style boardview (it starts with a str_length: header) or its obfuscated variant used for Apple logic boards. These open directly in OpenBoardView and FlexBV.

A .brd can also be a native Cadence Allegro PCB database. Those are binary, much larger (tens of megabytes) and need the Cadence Allegro Free Physical Viewer, or a conversion, to be read.

If a viewer reports an unknown format, check the file size and the first bytes in a text editor: readable text means a repair boardview, binary garbage means an Allegro database.

Opens with: OpenBoardView; FlexBV; BoardViewer; Allegro Free Physical Viewer (Allegro .brd only).

Tip: Apple 820-xxxxx boardviews are almost always .brd and open in OpenBoardView without any setup.

## .bdv — BDV boardview (Honhan)

URL: https://enginerys.com/formats/bdv/

Text-based boardview produced by Honhan / Hon Hai test tooling, with lightly obfuscated content.

BDV files are common for boards built by Foxconn-family factories and for many HP and Sony era designs. The content is simple text passed through a rolling character substitution, which viewers decode on the fly.

Opens with: OpenBoardView; FlexBV; BoardViewer.

## .fz — FZ boardview (ASUS / Pegatron)

URL: https://enginerys.com/formats/fz/

Compressed and encrypted boardview used for ASUS, ASRock and Pegatron boards.

An .fz file is a zlib-compressed parts-and-pins table wrapped in a stream cipher. A viewer needs the decryption key to read it; OpenBoardView asks you to enter the FZ key once in its settings, while FlexBV and BoardViewer handle it for you.

FZ files are small (often 100–600 KB). A file that is only a few kilobytes is usually a broken upload.

Opens with: OpenBoardView (FZ key required); FlexBV; BoardViewer.

Tip: If OpenBoardView shows an empty board for an .fz file, the FZ key is missing from its configuration.

## .cad — CAD boardview (GenCAD)

URL: https://enginerys.com/formats/cad/

GenCAD text export, the usual format for Compal, Quanta, Wistron and Dell / HP / Lenovo laptop boards.

GenCAD is an open, plain-text interchange format describing components, pads, nets and the board outline. Because it is standard, almost every boardview program reads it.

Some .cad files are instead BoardView R format saved with a .cad extension; modern viewers detect the difference automatically.

Opens with: OpenBoardView; FlexBV; BoardViewer.

## .tvw — TVW boardview (Tebo-ICT)

URL: https://enginerys.com/formats/tvw/

Binary boardview from Tebo-ICT test software, frequent for Gigabyte, MSI and many newer laptop boards.

TVW files keep full layer and net data in a proprietary binary container. They were long readable only by the original Tebo-ICT View program and by BoardViewer; recent builds of OpenBoardView and FlexBV can open most of them too.

Opens with: BoardViewer; Tebo-ICT View; FlexBV; OpenBoardView (recent builds).

## .asc — ASC boardview (ASUS TSICT)

URL: https://enginerys.com/formats/asc/

A set of plain-text tables (format.asc, parts.asc, pins.asc, nails.asc) exported by ASUS test tooling.

ASC boardviews are distributed as a folder or archive holding several .asc files. Keep them together: open any one of them and the viewer loads the rest from the same folder.

Opens with: OpenBoardView; FlexBV.

## .bvr — BVR boardview (BoardView R)

URL: https://enginerys.com/formats/bvr/

Text boardview from the BoardView R family of tools, seen for Lenovo, MSI and Clevo boards.

BVR files list parts, pins and nets as text, in two generations (BVRAW and BVR3). Current viewers support both.

Opens with: OpenBoardView; FlexBV; BoardViewer.

## .bv — BV boardview (ATE)

URL: https://enginerys.com/formats/bv/

Older ATE boardview format, usually found for legacy laptop and desktop boards.

A .bv file is a compact database of parts, pins and nets exported from in-circuit test fixtures.

Opens with: OpenBoardView; BoardViewer.

## .pcb — PCB boardview (XZZ and others)

URL: https://enginerys.com/formats/pcb/

In repair archives a .pcb is typically an XZZ (XinZhiZao) boardview — popular for phones and recent laptops.

XZZ .pcb files are encrypted and include resistance and diode-mode reference values next to the layout. They open in the XZZ viewer and in recent OpenBoardView and FlexBV builds.

The extension is also used by unrelated CAD tools (Altium, PADS). Those are design databases, not repair boardviews, and need the original CAD software.

Opens with: XZZ PCB viewer; OpenBoardView (recent builds); FlexBV.

## .cst — CST boardview (IBM / Lenovo Castw)

URL: https://enginerys.com/formats/cst/

Text boardview from the Castw tool chain, typical for older ThinkPad boards.

CST files are sectioned text files listing components, pins and nails (test points).

Opens with: OpenBoardView; BoardViewer.

## .f2b — F2B boardview (Unisoft ProntoPLACE)

URL: https://enginerys.com/formats/f2b/

Boardview exported from Unisoft ProntoPLACE, occasionally used for MSI and industrial boards.

F2B stores outlines, parts and annotations as text and is supported by OpenBoardView.

Opens with: OpenBoardView; Unisoft ProntoPLACE viewer.

## .bin — BIN firmware dump

URL: https://enginerys.com/formats/bin/

A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.

The file size equals the chip capacity: 2 MB (25x16), 4 MB (25x32), 8 MB (25x64), 16 MB (25x128) or 32 MB (25x256). A dump whose size is not one of these is either compressed, split across two chips, or damaged.

Intel boards keep the descriptor, Management Engine (ME / CSME) and BIOS regions inside one image. "ME clean" in a file name means the ME region was re-initialised so the board can train again after a chipset or long battery-less storage.

Never write a dump without reading and saving the original chip first — it holds the serial number, UUID, MAC address and the Windows licence key.

Opens with: CH341A + NeoProgrammer / AsProgrammer; flashrom; RT809F / RT809H; TL866II / T48; UEFITool (to inspect); HxD (hex editor).

Tip: Match the chip voltage: many modern laptops use 1.8 V flash, and a bare 3.3 V CH341A will damage it without an adapter.

## .rom — ROM BIOS image

URL: https://enginerys.com/formats/rom/

A BIOS image as shipped by the vendor (commonly AMI) — often the BIOS region only, without descriptor or ME.

A .rom from a vendor update package is meant for the built-in flasher. To use it on an external programmer you may need to rebuild a full image by placing it into the BIOS region of the original dump.

Opens with: Vendor flash utility; UEFITool; AMI AFU tools; CH341A (full images only).

## .fd — FD firmware image (Insyde)

URL: https://enginerys.com/formats/fd/

UEFI flash-device image, typical for Insyde H2O firmware on Acer, HP and Lenovo laptops.

Like .rom files, an .fd from an update package may contain only part of the flash. Compare its size with the chip before programming it directly.

Opens with: Insyde H2OFFT; UEFITool; CH341A (full images only).

## .cap — CAP BIOS capsule (ASUS)

URL: https://enginerys.com/formats/cap/

A signed UEFI capsule used by ASUS update tools. It carries a header in front of the actual BIOS image.

A .cap cannot be written straight to the chip: the capsule header (2048 bytes on most ASUS boards) must be removed first, which UEFITool does with "Extract body".

Opens with: ASUS EZ Flash / USB BIOS Flashback; UEFITool.

## .pdf — PDF schematic

URL: https://enginerys.com/formats/pdf/

The standard format for schematics, block diagrams, power-sequence charts and service manuals.

Factory schematics are vector PDFs with searchable text: use Ctrl+F on a net name (for example +3VALW or PP3V3_S5) to jump between pages. Scanned schematics are images and cannot be searched.

Good schematics start with a block diagram and a power-sequence page — read those first to learn which rail should appear in which order.

Opens with: Any PDF reader; SumatraPDF; Firefox / Chrome; FlexBV (links PDF to boardview).

## .rar — RAR archive

URL: https://enginerys.com/formats/rar/

Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.

If an archive asks for a password, look at the caption of the Telegram post: channels usually publish the password there or in the channel description.

Opens with: 7-Zip; WinRAR; The Unarchiver (macOS).

## .zip — ZIP archive

URL: https://enginerys.com/formats/zip/

Compressed archive that every operating system opens without extra software.

Scan unpacked archives before running anything: repair files are documents and data, so an .exe inside a "schematic" archive is a warning sign.

Opens with: Built-in OS tools; 7-Zip.

## .7z — 7z archive

URL: https://enginerys.com/formats/7z/

High-ratio compressed archive, often used for large BIOS collections.

7z archives need 7-Zip or a compatible tool; Windows 11 opens them natively.

Opens with: 7-Zip; WinRAR; Keka (macOS).

# Software

## Boardview viewers

- [OpenBoardView](https://openboardview.org/) — The default choice. Fast, searchable, supports most repair formats. Platforms: Windows, macOS, Linux. Free, open source. Formats: .brd .bdv .bv .bvr .cad .fz .asc .cst .f2b .tvw .pcb
- [FlexBV](https://pldaniels.com/flexbv5/) — Links a PDF schematic to the boardview so a click on a net jumps between them. Platforms: Windows, macOS, Linux. Free tier / paid licence. Formats: .brd .bdv .cad .fz .tvw .asc .bvr .pcb
- [BoardViewer](https://boardviewer.net/) — Long-standing viewer with wide format coverage, including Tebo .tvw. Platforms: Windows. Free. Formats: .brd .bdv .cad .fz .tvw .bv .cst
- [Allegro Free Physical Viewer](https://www.cadence.com/en_US/home/tools/allegro-downloads-start.html) — Opens native Cadence Allegro .brd design databases. Platforms: Windows. Free. Formats: Allegro .brd

## Firmware tools

- [flashrom](https://flashrom.org/) — Command-line reader / writer for SPI flash with CH341A, FT2232 and many other programmers. Platforms: Linux, macOS, Windows. Free, open source.
- [UEFITool](https://github.com/LongSoft/UEFITool) — Opens a firmware image as a tree: verify structure, extract or replace regions and modules. Platforms: Windows, macOS, Linux. Free, open source.
- [ME Analyzer](https://github.com/platomav/MEAnalyzer) — Identifies the Intel ME / CSME firmware version and state inside a dump. Platforms: Windows, macOS, Linux. Free, open source.
- [HxD](https://mh-nexus.de/en/hxd/) — Hex editor for comparing dumps and moving DMI / serial data. Platforms: Windows. Free.

## Archives & documents

- [7-Zip](https://www.7-zip.org/) — Unpacks .rar, .zip and .7z archives. Platforms: Windows. Free, open source.
- [SumatraPDF](https://www.sumatrapdfreader.org/) — Very fast PDF reader that stays responsive on 100-page vector schematics. Platforms: Windows. Free, open source.

# Glossary

- **Boardview** — A file describing the physical layout of a PCB: the position of every component, pad and net. Opened with a boardview viewer such as OpenBoardView.
- **Schematic** — The electrical circuit diagram of a board, normally a multi-page PDF organised by function (power, CPU, memory, I/O).
- **Board number** — The identifier printed on the PCB by the manufacturer (for example LA-E891P or 820-00165). It identifies the exact design and is the key to finding matching documentation.
- **ODM** — Original Design Manufacturer — the factory that designs and builds a board for a brand. Compal, Quanta, Wistron, LCFC, Inventec and Pegatron are the main laptop ODMs.
- **Net** — An electrical connection shared by several pins. Clicking a net in a boardview highlights every pad on it.
- **Rail** — A power-supply net, such as +3VALW (3.3 V always-on) or +VCORE (CPU core voltage).
- **Power sequence** — The order in which rails and enable signals must appear for the board to start. A missing step in the sequence is the usual lead when a board will not power on.
- **BIOS / UEFI** — The firmware that initialises hardware and starts the operating system, stored in an SPI flash chip on the board.
- **Dump** — A full binary copy of a flash chip, read with a hardware programmer.
- **EC (Embedded Controller)** — A microcontroller that manages power buttons, charging, keyboard and fans. Its firmware lives either inside the main BIOS chip or in a separate small flash chip.
- **ME / CSME** — Intel Management Engine, a subsystem with its own firmware region inside the BIOS chip. A corrupted or "dirty" ME region can stop a board from booting; a "clean ME" dump has that region reset to its factory state.
- **DMI data** — Machine-specific information inside the BIOS: serial number, product name, UUID, and often the Windows licence key. It must be carried over when a dump from another machine is used.
- **SPI flash** — The 8-pin (SOP8 / WSON8) memory chip that stores firmware, usually from the 25-series (W25Q64, GD25Q128, MX25L…).
- **CH341A** — An inexpensive USB programmer for 24/25-series chips. It outputs 3.3 V, so a 1.8 V adapter is required for low-voltage flash chips.
- **Diode mode** — A multimeter measurement of the voltage drop from a net to ground. Comparing readings with a known-good board finds shorted or open lines without powering the board.
- **Test point** — An exposed pad on the PCB used by factory test fixtures; boardviews list them as "nails".
- **Short to ground** — A fault where a rail is connected to ground through a failed component, typically a ceramic capacitor or a MOSFET.
- **PCH** — Platform Controller Hub — the Intel chipset that handles I/O. A failed PCH is a common cause of a board that has all standby rails but never starts.

# FAQ

**What is Enginerys?**

Enginerys is a free search engine for electronics-repair documentation. It indexes the names of schematics, boardview files and BIOS dumps posted in public Telegram channels, groups them by board number, brand and format, and links you to the original Telegram post where the file can be downloaded.

**Where do I download the file?**

Every result has an "Open in Telegram" button that opens the exact post in the source channel. Download the attachment there with the Telegram app or Telegram Web. Enginerys does not host, mirror or modify any file.

**How do I find the right schematic for my laptop?**

Search by the board number printed on the motherboard — for example LA-E891P, NM-B452, DA0X8BMB6F0 or 820-00165 — not by the model name on the case. One laptop model can ship with several different boards, and the board number is the only identifier that matches a schematic exactly.

**What is the difference between a schematic and a boardview?**

A schematic is the electrical diagram: it shows how components are connected and which voltages to expect. A boardview is the physical map: it shows where each component and net is located on the PCB. Technicians use both together — the schematic to understand the circuit, the boardview to find the part.

**Which program opens boardview files?**

OpenBoardView is free, runs on Windows, macOS and Linux, and opens most repair formats (.brd, .bdv, .cad, .fz, .asc, .bvr, .tvw). FlexBV and BoardViewer cover the rest. The format reference on this site lists the right viewer for each extension.

**How often is the index updated?**

Once a day. The crawler reads only new posts from each tracked channel, so files published today normally appear in search within 24 hours.

**Is Enginerys free?**

Yes. Search, browsing, the guides and the JSON search API are free and need no account.

**A link says the post or channel does not exist. Why?**

Channels are sometimes deleted, made private or have individual posts removed. If a file has more than one source, the file page lists every post where it was seen — try the next one. Dead channels are dropped from the index during the daily update.

**Are the files safe?**

Schematics (PDF) and boardviews are data files and are low-risk. Be careful with archives that contain executables, and always back up the original chip before writing a BIOS dump from any source. Enginerys cannot verify the content of third-party files.

**A BIOS archive is password-protected. Where is the password?**

Channels usually put the archive password in the caption of the post or in the channel description. Open the post in Telegram with the button on the file page and read the text under the attachment.

**Can I add my Telegram channel?**

Yes — if it is public and regularly posts schematics, boardviews or firmware as file attachments. Send the @username to the contact address on the About page. Channels with no files, paid-only content or invite-only access are not listed.

**How do I ask for a file to be removed from the index?**

Use the removal procedure on the DMCA page. Because Enginerys stores only the file name and a link, removing the index entry does not delete the file from Telegram; the channel owner or Telegram must do that.

**Does Enginerys have an API?**

There is a read-only JSON endpoint at /api/search.json?q=… that returns the same results as the search page, and /api/stats.json with index totals. Automated clients and AI assistants are welcome to use them with reasonable request rates.

# Telegram channels in the index

- [ShareMan (BIOS, Schematics, Boardview)](https://enginerys.com/channels/shareman_electronic_files/) — @ShareMan_Electronic_Files, Schematics + BIOS, 146,576 files indexed, last file 2025-05-19
- [BoardView, Schematics, BIOS](https://enginerys.com/channels/schematics_bios/) — @schematics_bios, Schematics + BIOS, 122,185 files indexed, last file 2026-10-27
- [Boardview-laptop-phone-TV-bios.schematic](https://enginerys.com/channels/pepeelectronica/) — @pepeelectronica, Schematics + BIOS, 59,882 files indexed, last file 2022-04-28
- [Santale Bios_Esquemas Notebook-PC](https://enginerys.com/channels/satale_bios_esquemas_laptop/) — @Satale_bios_esquemas_Laptop, Schematics + BIOS, 33,542 files indexed, last file 2026-11-12
- [GENERAL BIOS 💻💻](https://enginerys.com/channels/generalbios/) — @generalbios, BIOS & firmware, 30,970 files indexed, last file 2025-02-04
- [BIOS ARCHIVE | BIOS |Laptop Firmware & Tools](https://enginerys.com/channels/biosarchive/) — @biosarchive, BIOS & firmware, 25,780 files indexed, last file 2026-11-12
- [ESQUEMAS-ABGM-MANUTENÇÃO](https://enginerys.com/channels/abgm_manutencao_esquemas/) — @abgm_manutencao_esquemas, Schematics, 25,163 files indexed, last file 2023-11-18
- [LCD LED Bin Files](https://enginerys.com/channels/led_software/) — @led_software, TV & monitors, 22,468 files indexed, last file 2026-11-01
- [BIOS Repair Dump 🖥️ FIRMWARE](https://enginerys.com/channels/bios_repair/) — @BIOS_Repair, BIOS & firmware, 21,340 files indexed, last file 2025-09-25
- [IT SERVICE WORLD](https://enginerys.com/channels/it_service_world/) — @IT_SERVICE_WORLD, Schematics + BIOS, 19,675 files indexed, last file 2026-03-10
- [Схемы (Schematics), Boardview, Datashits и дампы BIOS для ремонта ноутбуков. База платформ: ASUS, Apple, Lenovo, HP, Acer, MSI.](https://enginerys.com/channels/cyberlanelectonik/) — @cyberlanelectonik, Schematics + BIOS, 18,630 files indexed, last file 2026-10-01
- [BIOS-ABGM-MANUTENÇÃO](https://enginerys.com/channels/abgm_manutencao_bios/) — @abgm_manutencao_bios, BIOS & firmware, 18,619 files indexed, last file 2022-12-04
- [UZB service manual](https://enginerys.com/channels/uzb4422/) — @uzb4422, TV & monitors, 18,242 files indexed, last file 2024-02-10
- [schematics|boardviews| ARCHIVE 💻💻](https://enginerys.com/channels/schematicslaptop/) — @schematicslaptop, Schematics, 15,671 files indexed, last file 2026-11-12
- [pdf service manual](https://enginerys.com/channels/pdf_servicemanual/) — @pdf_servicemanual, TV & monitors, 15,063 files indexed, last file 2026-10-06
- [Datasheet | Electronic component](https://enginerys.com/channels/datasheet_technar_org/) — @datasheet_technar_org, Datasheets, 14,782 files indexed, last file 2024-12-04
- [GENERAL SCHEMATICS & BOARDVIEW 💻💻](https://enginerys.com/channels/generalschematics/) — @generalschematics, Schematics, 13,082 files indexed, last file 2025-01-31
- [Ocean of Schematic & Boardview](https://enginerys.com/channels/alischematics/) — @alischematics, Schematics, 10,897 files indexed, last file 2023-01-11
- [BIOS | SCHEMATIC | BOARDVIEW](https://enginerys.com/channels/bartonarquivos/) — @bartonarquivos, Schematics + BIOS, 10,340 files indexed, last file 2026-11-09
- [SM SCHEMATICS & BOARDVIEW](https://enginerys.com/channels/smschematics/) — @smschematics, Schematics, 9,004 files indexed, last file 2026-10-24
- [Cynet](https://enginerys.com/channels/cynetitsolution/) — @cynetitsolution, Schematics + BIOS, 8,645 files indexed, last file 2026-11-12
- [Bios&schematic&Boardview one5 technology](https://enginerys.com/channels/one5technology/) — @one5technology, Schematics + BIOS, 8,032 files indexed, last file 2021-05-28
- [TV SOFTWARE WORLD](https://enginerys.com/channels/tvsoftwareworld/) — @tvsoftwareworld, TV & monitors, 7,575 files indexed, last file 2026-11-13
- [⚙️Laptop Bios & Schematics💻](https://enginerys.com/channels/pkbiosbdv/) — @pkbiosbdv, Schematics + BIOS, 7,509 files indexed, last file 2026-10-31
- [LCD panel datasheets -=Acodis=- Даташиты матриц](https://enginerys.com/channels/acodis_lcd_datasheets_edid/) — @acodis_lcd_datasheets_EDID, Datasheets, 6,276 files indexed, last file 2026-01-06
- [LCD LED SOFTWARE AND SCHEMATIC](https://enginerys.com/channels/gunvantrathore/) — @gunvantrathore, TV & monitors, 6,056 files indexed, last file 2022-11-08
- [Laptops Motherboard Boardview Schematic](https://enginerys.com/channels/laptopsboardview/) — @LaptopsBoardview, Boardviews, 5,876 files indexed, last file 2025-02-27
- [lcd tv led tv smart tv software](https://enginerys.com/channels/hashmielecom/) — @hashmielecom, TV & monitors, 5,720 files indexed, last file 2026-10-10
- [Nitya Tech Institute](https://enginerys.com/channels/nityatechnology2020/) — @nityatechnology2020, Schematics + BIOS, 5,373 files indexed, last file 2026-11-12
- [🛠💻SKCLAPPY BIOS💻🛠](https://enginerys.com/channels/skclappybios/) — @skclappybios, BIOS & firmware, 5,305 files indexed, last file 2026-10-28
- [SCHEMATIC WORLD LAPTOP DESKTOP COMPUTER](https://enginerys.com/channels/schematicworld/) — @SCHEMATICWORLD, Schematics, 5,120 files indexed, last file 2026-07-18
- [BOARDVIEW & SCHEMAS](https://enginerys.com/channels/boardviewsandachematics/) — @boardviewsandachematics, Boardviews, 4,965 files indexed, last file 2025-09-02
- [Laptex Schematics and BV Laptop (LSB)](https://enginerys.com/channels/laptexdna/) — @laptexdna, Schematics, 4,839 files indexed, last file 2026-10-18
- [Esquemáticos Canal cellsarfix 📲📲📲](https://enginerys.com/channels/canalesquematicos/) — @canalesquematicos, Phones, 4,674 files indexed, last file 2026-08-27
- [Schematic & Bios & Boardview laptop 💻](https://enginerys.com/channels/schematiclaptopramkushwaha/) — @schematiclaptopramkushwaha, Schematics + BIOS, 4,669 files indexed, last file 2026-09-26
- [Laptop's Bios Solutions👍](https://enginerys.com/channels/l9bcm2mdagnjndk1/) — @L9BCM2MdAgNjNDk1, BIOS & firmware, 4,647 files indexed, last file 2026-11-13
- [DTECH BIOS SOLUTION®](https://enginerys.com/channels/dtechbios/) — @dtechbios, BIOS & firmware, 4,523 files indexed, last file 2026-11-12
- [AFS BIOS](https://enginerys.com/channels/afsbiosfree/) — @afsbiosfree, BIOS & firmware, 4,410 files indexed, last file 2025-10-09
- [BIOS DUMP COMPUTER](https://enginerys.com/channels/biosdumpcomputer/) — @biosdumpcomputer, BIOS & firmware, 3,843 files indexed, last file 2026-09-12
- [Прошивка BIOS. Рабочие дампы.Схемы.](https://enginerys.com/channels/biositechyangiyer/) — @biositechyangiyer, Schematics + BIOS, 3,760 files indexed, last file 2026-11-10
- [Laptop's BIOS Solutions 👍](https://enginerys.com/channels/laptopbiossolutions/) — @Laptopbiossolutions, BIOS & firmware, 3,503 files indexed, last file 2026-11-12
- [JD Bios World](https://enginerys.com/channels/jdbiosworld/) — @jdbiosworld, BIOS & firmware, 3,005 files indexed, last file 2026-11-12
- [JD Bios World](https://enginerys.com/channels/jdbios_world/) — @jdbios_world, BIOS & firmware, 2,640 files indexed, last file 2026-11-08
- [Final Fixer Data Hub](https://enginerys.com/channels/freeschematicdiagram/) — @freeschematicdiagram, Schematics, 2,601 files indexed, last file 2023-08-27
- [Laptex Laptop BIOS (LLB)](https://enginerys.com/channels/laptexlaptopbios/) — @laptexlaptopbios, BIOS & firmware, 2,430 files indexed, last file 2026-10-18
- [Boards Scan Repository](https://enginerys.com/channels/boardsscanrepo/) — @boardsscanrepo, Schematics + BIOS, 2,170 files indexed, last file 2026-11-12
- [CID schematic&boardview&bios- jo na mile kahi wo mile yehi](https://enginerys.com/channels/cidschematicandboardviewofficial/) — @cidschematicandboardviewofficial, Schematics + BIOS, 2,075 files indexed, last file 2026-10-13
- [AFS SCHEMATIC](https://enginerys.com/channels/afsschematicfree/) — @afsschematicfree, Schematics, 1,803 files indexed, last file 2025-05-06
- [Bios solution](https://enginerys.com/channels/dr_bios_solution_chat/) — @dr_bios_solution_chat, BIOS & firmware, 1,759 files indexed, last file 2026-10-21
- [💻Bios&schematic world](https://enginerys.com/channels/biosschematicworld/) — @BiosSchematicWorld, Schematics + BIOS, 1,736 files indexed, last file 2026-11-09
- [Esquematicos de celulares👌](https://enginerys.com/channels/esquematicosespecialista/) — @esquematicosespecialista, Phones, 1,685 files indexed, last file 2026-09-24
- [SM Intel Repository](https://enginerys.com/channels/sm_intel_repository/) — @sm_intel_repository, BIOS & firmware, 1,634 files indexed, last file 2026-07-07
- [S Bios World](https://enginerys.com/channels/sboisworld/) — @sboisworld, BIOS & firmware, 1,592 files indexed, last file 2026-11-11
- [دیجی کال](https://enginerys.com/channels/schematic_mobile_iran/) — @Schematic_mobile_iran, Phones, 1,574 files indexed, last file 2022-04-19
- [THE BIOS WORLD](https://enginerys.com/channels/the_bios_world/) — @THE_BIOS_WORLD, BIOS & firmware, 1,413 files indexed, last file 2026-10-12
- [BIOS BIN FILES](https://enginerys.com/channels/biosfilebins/) — @biosfilebins, BIOS & firmware, 1,354 files indexed, last file 2026-10-13
- [ITHINKHS BIOS & SCHEMATICS](https://enginerys.com/channels/ithinkhs/) — @ITHINKHS, Schematics + BIOS, 1,335 files indexed, last file 2024-10-11
- [ANZ Technology Laptop Chip Level Repair](https://enginerys.com/channels/anztechnology/) — @anztechnology, Schematics + BIOS, 1,324 files indexed, last file 2026-10-30
- [درخواست فایل فلش کانال بایوس فایلز](https://enginerys.com/channels/bios_files_request/) — @bios_files_Request, BIOS & firmware, 1,282 files indexed, last file 2026-11-12
- [Bios & schematics](https://enginerys.com/channels/biosschematics/) — @biosschematics, Schematics + BIOS, 1,190 files indexed, last file 2025-11-19
- [LED TV FIRMWARE -UPDATE- SERVICE MANUAL](https://enginerys.com/channels/tvcodeservice/) — @tvcodeservice, TV & monitors, 1,110 files indexed, last file 2026-11-03
- [Bancada Arquivos,Bios e Esquemas](https://enginerys.com/channels/oficinacomputadores/) — @oficinacomputadores, Schematics + BIOS, 1,092 files indexed, last file 2025-04-07
- [AH TECHNO SERVICE ~BIOS & SCHEMATICS](https://enginerys.com/channels/hrtechno/) — @hrtechno, Schematics + BIOS, 1,077 files indexed, last file 2026-10-04
- [AFS SOLUTIONS](https://enginerys.com/channels/afssolutions/) — @afssolutions, BIOS & firmware, 1,053 files indexed, last file 2026-10-11
- [bios](https://enginerys.com/channels/bios_laptop/) — @bios_laptop, BIOS & firmware, 1,039 files indexed, last file 2022-06-15
- [SMART PHONE SCHEMATICS](https://enginerys.com/channels/smart_phone_schematics/) — @SMART_PHONE_SCHEMATICS, Phones, 1,002 files indexed, last file 2026-02-07
- [General Smart Phone Schematics](https://enginerys.com/channels/general_smart_phone_schematics/) — @GENERAL_SMART_PHONE_SCHEMATICS, Phones, 998 files indexed, last file 2024-11-11
- [Achei Bios - Bios / Esquemas / Boardviews](https://enginerys.com/channels/acheibios/) — @acheibios, Schematics + BIOS, 772 files indexed, last file 2026-11-04
- [Xperts Bios Solution](https://enginerys.com/channels/xpertsbiossolution/) — @XpertsBiosSolution, BIOS & firmware, 633 files indexed, last file 2026-08-31
- [Laptop & Desktop Bios Files](https://enginerys.com/channels/laptopdesktopbios/) — @Laptopdesktopbios, BIOS & firmware, 626 files indexed, last file 2026-05-01
- [Z INFO SERVICE BIOS SOLUTION](https://enginerys.com/channels/zinfoservicebios/) — @zinfoservicebios, BIOS & firmware, 608 files indexed, last file 2026-11-09
- [boardview](https://enginerys.com/channels/boardview/) — @boardview, Boardviews, 607 files indexed, last file 2024-09-14
- [BIOS GLOBAL TECH SUPPORT](https://enginerys.com/channels/bios_laptopomi/) — @bios_laptopomi, BIOS & firmware, 570 files indexed, last file 2026-11-12
- [Board Schematic | Board View | Laptop](https://enginerys.com/channels/boardschematic/) — @BoardSchematic, Boardviews, 553 files indexed, last file 2026-11-06
- [LCD AND LED service manual](https://enginerys.com/channels/datasheets1/) — @datasheets1, TV & monitors, 553 files indexed, last file 2026-07-24
- [Laptop Chip Level Repair Masters](https://enginerys.com/channels/laptopchiplevelrepair/) — @laptopchiplevelrepair, Schematics + BIOS, 547 files indexed, last file 2024-07-26
- [Vinafix CHANELL|BIOS|SCHEMATICS|BOARDVIEW|TOOLS](https://enginerys.com/channels/vinafix_bios/) — @vinafix_bios, Schematics + BIOS, 542 files indexed, last file 2026-11-02
- [Esquemas ELÉTRICOS" w.s_celulares](https://enginerys.com/channels/esquemaseletricos/) — @esquemaseletricos, Phones, 542 files indexed, last file 2026-09-30
- [Z INFO SERVICE BIOS - SCHEMATIC - BOARDVIEW](https://enginerys.com/channels/zinfoservicechannel1/) — @ZINFOSERVICECHANNEL1, Schematics + BIOS, 520 files indexed, last file 2026-11-03
- [LAPTOP CHIPLEVEL EXPERT (OFFICIAL)](https://enginerys.com/channels/laptopchiplevelexpert/) — @laptopchiplevelexpert, Schematics + BIOS, 509 files indexed, last file 2026-11-05
- [Laptop schematic](https://enginerys.com/channels/notebookschematic/) — @notebookschematic, Schematics, 498 files indexed, last file 2026-11-02
- [MFIT](https://enginerys.com/channels/mfittool/) — @mfittool, Repair software, 490 files indexed, last file 2026-11-01
- [SM BIOS](https://enginerys.com/channels/sm_bios/) — @sm_bios, BIOS & firmware, 488 files indexed, last file 2026-11-10
- [S BIOS WORLD CHANNEL](https://enginerys.com/channels/sbiosworldchannel/) — @sbiosworldchannel, BIOS & firmware, 465 files indexed, last file 2026-11-11
- [Bios Hub - Sohail System](https://enginerys.com/channels/bioshub/) — @bioshub, BIOS & firmware, 436 files indexed, last file 2023-01-28
- [Esquematicos de Celulares](https://enginerys.com/channels/esquematicosparatodos/) — @esquematicosparatodos, Phones, 417 files indexed, last file 2021-12-16
- [SM BIOS SUPPORT](https://enginerys.com/channels/smbiossupport/) — @smbiossupport, BIOS & firmware, 397 files indexed, last file 2026-11-10
- [شماتیک و مسیر موبایل](https://enginerys.com/channels/mobile_jump2/) — @mobile_jump2, Phones, 377 files indexed, last file 2021-11-27
- [BIOS FILES](https://enginerys.com/channels/biosfiles/) — @biosfiles, BIOS & firmware, 373 files indexed, last file 2026-09-29
- [BIOSARHCIVES👍](https://enginerys.com/channels/biosbigarchives/) — @biosbigarchives, BIOS & firmware, 373 files indexed, last file 2022-10-31
- [Bios Solutions](https://enginerys.com/channels/lcs_biossolutions/) — @LCS_Biossolutions, BIOS & firmware, 366 files indexed, last file 2026-11-12
- [BoardView](https://enginerys.com/channels/boardviews/) — @boardviews, Boardviews, 364 files indexed, last file 2025-02-18
- [Bios Skema boardview laptop](https://enginerys.com/channels/fileservicelaptop/) — @fileservicelaptop, Schematics + BIOS, 334 files indexed, last file 2022-06-21
- [schematics(شماتیک موبایل)](https://enginerys.com/channels/schematics_mobile/) — @Schematics_Mobile, Phones, 331 files indexed, last file 2021-03-03
- [Schematics](https://enginerys.com/channels/phoneschematics/) — @phoneSchematics, Phones, 329 files indexed, last file 2026-10-22
- [اموزش تعمیرات موبایل | شماتیک رایگان](https://enginerys.com/channels/tamirat_moobile/) — @tamirat_moobile, Phones, 327 files indexed, last file 2023-08-30
- [schematic_mobile5](https://enginerys.com/channels/schematic_mobile5/) — @schematic_mobile5, Phones, 323 files indexed, last file 2026-09-29
- [Laptop & Desktop BIOS BIN File](https://enginerys.com/channels/computerbiosbinfile/) — @ComputerBIOSBinFile, BIOS & firmware, 322 files indexed, last file 2025-09-21
- [DataSheet](https://enginerys.com/channels/datasheet/) — @datasheet, Datasheets, 319 files indexed, last file 2018-02-27
- [📱کانال شماتیک و آموزش تعمیرات 📲](https://enginerys.com/channels/schematic_ir20/) — @Schematic_ir20, Phones, 318 files indexed, last file 2021-08-29
- [Boardviews and Schematics](https://enginerys.com/channels/boardviews_schematics/) — @boardviews_schematics, Boardviews, 315 files indexed, last file 2024-08-20
- [Cll Fhone Schematics](https://enginerys.com/channels/c_f_s/) — @c_f_s, Phones, 289 files indexed, last file 2018-02-02
- [laptop bios/schematics Group](https://enginerys.com/channels/laptopbios21/) — @laptopbios21, Schematics + BIOS, 283 files indexed, last file 2025-02-06
- [Mac Schematic&BoardView](https://enginerys.com/channels/mac_shematic_santale/) — @Mac_Shematic_Santale, Apple / Mac, 278 files indexed, last file 2019-07-24
- [BIOS ARCHIVE PHOTO MOTHERBOARDS 🖥💻📱](https://enginerys.com/channels/biosarchive_photos/) — @biosarchive_photos, Schematics + BIOS, 269 files indexed, last file 2026-11-03
- [All India free BIOS,Board view, schematic solution](https://enginerys.com/channels/clrindore/) — @CLRINDORE, Schematics + BIOS, 262 files indexed, last file 2026-09-25
- [EmdadBios مرجع بایوس و فایل کلین](https://enginerys.com/channels/emdadbios/) — @emdadbios, BIOS & firmware, 255 files indexed, last file 2026-10-30
- [Ic mosfet datasheet](https://enginerys.com/channels/ic_mosfet_pdf_datasheets/) — @ic_mosfet_pdf_datasheets, Datasheets, 243 files indexed, last file 2022-03-17
- [Mobile Repair Official](https://enginerys.com/channels/mrepairo/) — @mrepairo, Phones, 237 files indexed, last file 2026-06-27
- [A-Z مرجع ولتاژ مادربرد](https://enginerys.com/channels/azvoltagemap/) — @azvoltagemap, Schematics, 210 files indexed, last file 2026-11-11
- [bios dump flash](https://enginerys.com/channels/tamirkaran_chanel/) — @tamirkaran_chanel, BIOS & firmware, 182 files indexed, last file 2022-02-23
- [BIOS BIN](https://enginerys.com/channels/biosbin/) — @biosbin, BIOS & firmware, 180 files indexed, last file 2026-08-04
- [ESQUEMATICOS DE CELULARES GRATIS](https://enginerys.com/channels/esquematicosdecelulares/) — @esquematicosdecelulares, Phones, 164 files indexed, last file 2022-09-06
- [Laptop BIOS/EFI for free](https://enginerys.com/channels/efibios/) — @efibios, BIOS & firmware, 160 files indexed, last file 2026-08-01
- [Bios schematic boardview for Laptop desktop & LED✌️](https://enginerys.com/channels/laptop_bios_schematic/) — @laptop_bios_schematic, Schematics + BIOS, 152 files indexed, last file 2026-08-24
- [Computer Laptop | Bios | Schematics | Softwares](https://enginerys.com/channels/laptopschematics/) — @laptopschematics, Schematics + BIOS, 149 files indexed, last file 2026-11-08
- [Schematic Mobile](https://enginerys.com/channels/schematic_mobiles/) — @schematic_mobiles, Phones, 132 files indexed, last file 2019-10-01
- [Mobile schematics Hub](https://enginerys.com/channels/mobileschematicshub/) — @mobileschematicshub, Phones, 125 files indexed, last file 2026-05-31
- [TechNoDev Bios Support_Paid](https://enginerys.com/channels/technodev_bios/) — @technodev_bios, BIOS & firmware, 123 files indexed, last file 2026-10-07
- [Boardview & Schematics](https://enginerys.com/channels/boardviewschematicsfree/) — @boardviewschematicsfree, Boardviews, 118 files indexed, last file 2026-10-22
- [FixTronix | Support Community](https://enginerys.com/channels/fixtronix_support_community/) — @fixtronix_support_community, Schematics + BIOS, 114 files indexed, last file 2026-09-29
- [BIOS FIX Schematic Board view⚡️⚡️⚡️](https://enginerys.com/channels/biossupport2006/) — @BiosSupport2006, Schematics + BIOS, 113 files indexed, last file 2025-08-16
- [xiaomi schematic diagram](https://enginerys.com/channels/mischematic/) — @mischematic, Phones, 111 files indexed, last file 2026-10-29
- [🧚‍♂️🧞‍♂️macGURU JIII🧞‍♀️🧚‍♀️](https://enginerys.com/channels/ithinkhs_casediscussion/) — @ithinkhs_casediscussion, Apple / Mac, 109 files indexed, last file 2024-10-11
- [شماتیک انواع گوشی ها](https://enginerys.com/channels/mobileshematic/) — @mobileshematic, Phones, 107 files indexed, last file 2025-04-27
- [Схемы, boardview, datasheet's FREE](https://enginerys.com/channels/opendatasheet/) — @opendatasheet, Schematics + BIOS, 107 files indexed, last file 2021-01-21
- [Problems solved](https://enginerys.com/channels/iranianrefix/) — @iranianRefix, Schematics + BIOS, 98 files indexed, last file 2026-06-28
- [BIOS BIN](https://enginerys.com/channels/laptopdesktopbiosbin/) — @laptopdesktopbiosbin, BIOS & firmware, 97 files indexed, last file 2026-06-22
- [Boardview Schematics](https://enginerys.com/channels/boardviewschematics/) — @BoardviewSchematics, Boardviews, 94 files indexed, last file 2026-04-26
- [GENERAL PROBLEM SOLVED](https://enginerys.com/channels/generalproblemsolved/) — @generalproblemsolved, Schematics + BIOS, 92 files indexed, last file 2025-01-11
- [Boardview | Схемы](https://enginerys.com/channels/boardviewno/) — @Boardviewno, Boardviews, 85 files indexed, last file 2025-08-19
- [Tested Software files](https://enginerys.com/channels/testedsoftwarefiles/) — @testedsoftwarefiles, TV & monitors, 84 files indexed, last file 2026-11-04
- [IAS VIP TOOLS 2.0](https://enginerys.com/channels/iasviptools/) — @iasviptools, BIOS & firmware, 83 files indexed, last file 2026-11-04
- [BoardView MotherBoard](https://enginerys.com/channels/boardview067/) — @Boardview067, Boardviews, 80 files indexed, last file 2024-08-02
- [Xperts Bios Solution (Broadcast)](https://enginerys.com/channels/biosschematicboardviewnolimit/) — @BiosSchematicBoardviewNoLimit, Schematics + BIOS, 79 files indexed, last file 2024-09-21
- [FixTronix](https://enginerys.com/channels/fixtronix/) — @fixtronix, Schematics + BIOS, 76 files indexed, last file 2025-09-13
- [TV Software](https://enginerys.com/channels/tv_software/) — @tv_software, TV & monitors, 69 files indexed, last file 2026-09-04
- [PC Laptop BIOS - schematic - BDV & repair information](https://enginerys.com/channels/datalvela_servicios/) — @Datalvela_servicios, Schematics + BIOS, 67 files indexed, last file 2024-12-09
- [BOARDVIEW ARCHIVE](https://enginerys.com/channels/boardviewarchive/) — @boardviewarchive, Boardviews, 65 files indexed, last file 2026-07-15
- [Xperts Bios Solution Free Bios Support](https://enginerys.com/channels/free_bios_support/) — @free_bios_support, BIOS & firmware, 64 files indexed, last file 2026-04-13
- [DumpFlash](https://enginerys.com/channels/bios_bin_file/) — @bios_bin_file, BIOS & firmware, 63 files indexed, last file 2023-01-13
- [شماتیک و نقشه لپ تاپ](https://enginerys.com/channels/laptopschematic/) — @laptopschematic, Schematics, 62 files indexed, last file 2021-12-28
- [Замеры видеокарт и ноутбуков + куча еще всякого](https://enginerys.com/channels/videocard_notebook_resistance/) — @videocard_notebook_resistance, GPU & measurements, 59 files indexed, last file 2026-02-26
- [Schematics & Boardviews](https://enginerys.com/channels/schematics_boardviews/) — @schematics_boardviews, Schematics, 56 files indexed, last file 2025-12-13
- [DESKTOP BIOS PDF BDV](https://enginerys.com/channels/zinfo_desktop/) — @zinfo_desktop, BIOS & firmware, 56 files indexed, last file 2026-10-27
- [Mobile Repair Solutions](https://enginerys.com/channels/schematic_diagram/) — @Schematic_Diagram, Phones, 56 files indexed, last file 2022-11-03
- [JD SCHEMATICS&BOARDVIEW World](https://enginerys.com/channels/jdschematicsworld/) — @jdschematicsworld, Schematics, 53 files indexed, last file 2025-03-01
- [Master Lappysan & Technodev](https://enginerys.com/channels/lappysan/) — @lappysan, BIOS & firmware, 51 files indexed, last file 2026-10-09
- [Schematics&Boardview](https://enginerys.com/channels/schematics_board_view/) — @schematics_board_view, Schematics, 50 files indexed, last file 2025-08-21
- [Display Panel Datasheet](https://enginerys.com/channels/cdispdata/) — @cdispdata, Datasheets, 48 files indexed, last file 2026-05-31
- [Desktop Bios bin](https://enginerys.com/channels/desktopbios/) — @desktopbios, BIOS & firmware, 44 files indexed, last file 2026-08-30
- [Ремонт компьютеров и ноутбуков Телевизоров](https://enginerys.com/channels/laptopdesktop/) — @laptopdesktop, Schematics + BIOS, 42 files indexed, last file 2022-07-03
- [Bios & EC](https://enginerys.com/channels/bios_main_ec_kbc/) — @bios_main_ec_kbc, BIOS & firmware, 37 files indexed, last file 2026-02-06
- [Ufi box, isp & schematic](https://enginerys.com/channels/smart_repair_phone/) — @smart_repair_phone, Phones, 35 files indexed, last file 2020-11-22
- [Dump File Flash Bios Update EMMC , NAND فایل های فلش بایوس - نند -](https://enginerys.com/channels/dumpfileflashupdate4/) — @DumpFileFlashUpdate4, Phones, 33 files indexed, last file 2026-11-11
- [CBM Laptop Desktop Repair Guide](https://enginerys.com/channels/motherboard_repair_guide/) — @Motherboard_Repair_Guide, Schematics + BIOS, 30 files indexed, last file 2026-07-18
- [datasheets](https://enginerys.com/channels/datasheets0/) — @datasheets0, Datasheets, 26 files indexed, last file 2023-12-21
- [Schematics and Boardview laptop](https://enginerys.com/channels/schematics_boardview/) — @schematics_boardview, Schematics, 25 files indexed, last file 2026-06-07
- [Boardview software download](https://enginerys.com/channels/boardview_software_download/) — @boardview_software_download, Repair software, 25 files indexed, last file 2021-03-01
- [Dump file emmc and ufs with nvdata](https://enginerys.com/channels/wzcare/) — @wzcare, Phones, 25 files indexed, last file 2024-05-25
- [LCIIT ELECTRO IT WORLD](https://enginerys.com/channels/lciitworld/) — @lciitworld, Schematics + BIOS, 25 files indexed, last file 2026-10-01
- [BIOS & SCHEMATICS SOLUTION](https://enginerys.com/channels/biosarchive2dollarpaypal/) — @biosarchive2dollarpaypal, Schematics + BIOS, 24 files indexed, last file 2025-08-29
- [schematic mobile](https://enginerys.com/channels/schematicmobile/) — @schematicmobile, Phones, 22 files indexed, last file 2025-04-27
- [Bios files and electrical schematics 💻📱🖥🎮](https://enginerys.com/channels/bios_schematics/) — @bios_schematics, Schematics + BIOS, 21 files indexed, last file 2026-08-29
- [EMMC & UFS => DUMP's&FFU's](https://enginerys.com/channels/emmcufsdumps/) — @emmcufsdumps, Phones, 19 files indexed, last file 2024-11-05
- [SMART PHONE SCHEMATICS](https://enginerys.com/channels/smartschematics/) — @SMARTSCHEMATICS, Phones, 18 files indexed, last file 2025-10-07
- [Laptop Schematic And Boardview👍](https://enginerys.com/channels/laptopschmatic/) — @LaptopSchmatic, Schematics, 16 files indexed, last file 2022-10-11
- [Laptop Schematics India](https://enginerys.com/channels/laptopschematicsindia/) — @laptopschematicsindia, Schematics, 15 files indexed, last file 2026-05-13
- [Bios for xeon e3 v5 (desktop)](https://enginerys.com/channels/bios_xeon_e3v5/) — @bios_xeon_e3v5, BIOS & firmware, 13 files indexed, last file 2024-05-01
- [Schematic Samsung 📱](https://enginerys.com/channels/comsamsung/) — @ComSamsung, Phones, 12 files indexed, last file 2025-12-12