ROM image for an H81M-VG4 motherboard, BIOS version 1.50 according to the name, packed as a RAR of 5.87 MB. No brand is given in the name, although H81M-VG4 is the naming used on ASRock micro-ATX boards with the Intel H81 chipset. The file serves to restore a board whose BIOS is corrupted by flashing the SPI chip directly with a programmer. Check the exact model and revision on the PCB, as R2 and R3 versions exist, back up the original chip, 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 →