Asus K42Jc BIOS image archive, 1.05 MB, carrying the AS216 tag that likely marks BIOS version 216. Unpack the ZIP to see whether it holds a raw SPI dump or a vendor update file. Shops use such firmware to repair no-post or no-display faults caused by corrupted BIOS, and to program replacement flash chips. Check that the motherboard matches the K42Jc, back up the original chip with your programmer, and confirm the image fits the chip exactly 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 .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 →