BIOS image for the ASUS X401A laptop, referenced to the X401A2 board variant with SATA mentioned in the name and revision 3.0 noted, provided as a 3.49 MB ZIP. It is intended for recovering a board with a corrupted BIOS by writing the SPI flash with an external programmer. Before writing, back up the existing chip, make sure the image size equals the chip capacity, and confirm your board is revision 3.0 since firmware from other X401A revisions may not suit it.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →