Working BIOS for the ASUS H81M-P SI desktop motherboard, an H81 chipset model, in a 4.61 MB RAR archive with no revision stated in the name. When a board of this type powers on without POST or video because of bad firmware, the image can be written straight to the SPI flash with a hardware programmer. Make a backup of the original chip before writing so system identifiers are not lost. Check that the chip capacity matches the image size and that the board model printed on the PCB is exactly H81M-P SI.
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 →