BIOS image for the ASUS BU401LA laptop mainboard, revision 2.0, sized for a 16MB SPI flash chip and packed in a 5.03 MB RAR archive. A full chip dump like this is used to recover a board after a failed update, a corrupted firmware region or a no-power fault traced to the BIOS. Write it with an SPI programmer such as a CH341A or RT809H, and save a backup of the original chip first. The rev 2.0 marking on the PCB should match, and the chip must really be 16MB.
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.
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 →