Compressed BIOS for the Asus K42JB laptop, named with AS220, likely BIOS revision 220. The archive is 975 KB, roughly a 1 MB firmware package. Use it to bring a corrupted board back to life, either via the Asus flash utility if the system still boots or by writing the SPI chip with a programmer if it does not. Before writing, save a backup of the original chip, confirm the board fits the K42JB model, and compare the image size with the chip 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 →