BIOS files for revision 1.0 of the Gigabyte GA-945GM-S2 motherboard. Gigabyte prints the PCB revision near the expansion slots or board edge, and firmware for rev 1.0 should not be assumed compatible with later revisions such as 3.x. Use the archive to restore a corrupt or failed BIOS by reprogramming the flash chip with a hardware programmer. Inspect the archive to see whether it holds a raw dump or a vendor update file. Save a dump of the existing chip before writing and confirm the capacity matches.
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 →