Acer BIOS firmware packed in a RAR archive of 14.9 MB, labelled X29R4-AA. The name gives no board number, revision or flash capacity, so the exact laptop or desktop it belongs to has to be confirmed from the unit itself. Unpack it and check the image size against the SPI flash chip before writing anything, since a file that does not match the chip capacity will not fit. Read and save the original chip contents with a programmer first, so the board can be returned to its previous state if the new image fails.
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 Nov 2023 | Open file on RM Schematics |
| @generalbios | 3 Dec 2023 | Open file on RM Schematics |
| @generalbios | 14 Jul 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 →