BIOS image for the ASUS X421IA laptop, board revision R2.0, provided as a 17.2 MB RAR archive. The dump is used to restore the SPI flash on a board that does not boot or shows no display after a firmware problem, written with a CH341A or similar programmer. Verify that the extracted file size matches your flash chip and that the motherboard is marked R2.0. Always save the existing chip contents before writing, since they may contain unique system data.
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 →