BIOS image for the H61M-S1 PLUS motherboard, sized for a 4 MB flash chip, in a 2.83 MB RAR. The name does not state the brand or version, though boards with this model name are made by ASRock on the Intel H61 chipset. A technician would use it to recover a board that fails to post after a corrupted update by writing the SPI chip with a programmer like a CH341A. Confirm the board model and that the installed chip is 4 MB, and save the original contents before writing.
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 →