Gigabyte GA-H55M-S2 rev. 1.3 firmware, a compact 648 KB ZIP likely holding a compressed BIOS image or update utility; the name does not state the version. The board is an Intel H55 microATX design for LGA1156 CPUs. Technicians use such files to reprogram the BIOS chip after corruption, either through the vendor flashing tool or an external SPI programmer. Because Gigabyte releases separate BIOS per revision, match the revision on the PCB, keep a backup of the original chip and check the extracted image size against 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 .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 →