Firmware archive for the Gigabyte GA-H77-DS3H at board revision 1.1, larger than its sibling files at 10.7 MB, which suggests it may hold more than one image. Inspect the extracted contents before use. Technicians write such dumps onto the board's SPI flash with a programmer to recover from a bad flash or a dead board. Gigabyte's dual-BIOS design uses main and backup chips, so identify which chip you are programming. Back up the existing data and check revision 1.1 on the PCB silkscreen.
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 →