Desktop BIOS file for the G31M3-L V2 and G31M3-LS V2 motherboards, both built on the Intel G31 chipset, carrying the extension .280, which most likely marks the firmware version. The 512 KB size corresponds to a 4 Mbit flash chip, a common size on boards of that generation. Use it to reflash the board through the vendor utility or an external programmer when the BIOS is corrupted. Confirm the exact board model and V2 revision printed on the PCB, and back up the current chip contents 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →