ZyXEL firmware archive marked del1201-t104_b, 1.49 MB in RAR format. The name is a fairly cryptic model or firmware code, so confirm the exact device and hardware version on the unit label before use. ZyXEL firmware is usually specific to a hardware revision, and a wrong image can brick the device. Typical use is recovery of a modem or router through its bootloader or by reprogramming the flash chip. Back up the original flash contents first and verify the image size suits the chip.
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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 8 May 2021 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 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 →