Firmware archive for the ASUS BU403UA laptop, revision 2.1 board, supplied as a 6.34 MB ZIP. No ME status, chip type or version is given in the name, so open the archive and inspect the image before use. Technicians use such dumps to revive a board with corrupted BIOS by writing the SPI flash with a programmer like the CH341A. Always read and save the original chip first, confirm the PCB revision reads 2.1, and make sure the file size matches the flash capacity.
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 →