BIOS for the ASUS A4321 board, also listed as A4321-K, at revision 2.0, marked as working and packed as a 5.42 MB RAR. The K suffix denotes a variant, so check the PCB silkscreen carefully before flashing. Technicians write such images to the SPI BIOS chip with a CH341A or similar programmer to recover boards with corrupted firmware. Read and back up the original chip first. Confirm the image size matches the flash, because revision 1.3 and 2.0 boards are not interchangeable.
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 | 1 Jun 2022 | Open file on RM Schematics |
| @fileservicelaptop | 13 Jun 2022 | Open file on RM Schematics |
| @fileservicelaptop | 13 Jun 2022 | 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 →