RAR archive of about 3.11 MB with the BIOS for revision 1.0 of the Gigabyte GA-H55M-USB3 desktop board. Revision 1.0 and 2.0 files for this model are separate, and flashing the wrong one can leave the board unbootable, so check the revision marking on the PCB. A technician writes it to the SPI chip with a programmer when the firmware is corrupted. Read and back up the existing chip before erasing, and check the file size against the flash 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 .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 →