Working BIOS dump for the ASUS X409MA laptop, board revision 2.0, intended for an 8 MB flash chip. Although the rar archive weighs 11.7 MB, the image inside should match the 8 MB chip, so verify the file size before programming. Technicians use such a file to recover a laptop that powers on without display or after a corrupted firmware update, writing it with a CH341A or similar programmer. Confirm the revision silkscreened on the mainboard and keep a backup of the original chip contents first.
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 →