BIOS package for the ASRock ZH77 Pro3 motherboard, board revision 1.04, in a RAR archive of about 4.39 MB. The name gives no BIOS version, so inspect the contents before use. Built around the Intel H77 chipset, the board keeps firmware on an SPI chip that can be rewritten with a programmer when the board will not POST. Check the revision silkscreened on the PCB, read and keep the original chip dump, and make sure the image size matches the flash 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 →