Gigabyte GA-H61-S3 BIOS for board revision 1.0, supplied as a 2.81 MB RAR archive. The H61 is an Intel chipset for LGA1155 desktop processors. Gigabyte prints the revision on the PCB, normally near the slots, and the rev 2.0 board uses different firmware, so check the marking before flashing. Many Gigabyte boards carry two BIOS chips, so identify the correct one. Read and save the original with a programmer before writing, and make sure the image size matches the chip.
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 →