Firmware dump for the ASUS X421EAYB laptop, board revision 2.0, marked as tested OK, packaged as a RAR of roughly 9.7 MB. The name gives no chip size or version, so check the extracted files before use. Such images are written with an SPI programmer such as a CH341A to revive a board with a damaged BIOS. Save a backup of the existing chip contents first, verify the image size fits the flash chip, and confirm the PCB revision is 2.0.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 12 Mar 2024 | Open file on RM Schematics |
| @generalbios | 14 Jul 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | 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 →