BIOS set for the Dell Inspiron 5459 built on Quanta board DA0AM8MB8D0, revision D. The name mentions U23 and U25, the board positions of the chips the images belong to, so each dump must go to its matching location. DA0-prefixed numbers follow the Quanta scheme. Before writing with a programmer, read and keep the original content of both chips, confirm the board code and revision printed on the PCB, and verify that each image size matches the capacity of the chip it targets.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (9)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 7 Jul 2021 | Open file on RM Schematics |
| @laptop_bios_schematic | 12 Jul 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 9 Dec 2021 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @cidschematicandboardviewofficial | 27 Jan 2025 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 13 Jul 2025 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 14 Jul 2025 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →