ASUS X405UQ laptop BIOS for main board revision 2.1, described as fully working. The firmware lets a technician restore an SPI flash chip after a failed update or corruption that leaves the machine with no display or no boot. Use a programmer such as a CH341A with a suitable clip or remove the chip. Dump the original first, because it holds serial numbers and system data, and confirm the revision on the board and the chip size before writing.
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 →