Working BIOS image for the ECS H81H3-M4 motherboard, version 1.0A, which the name reports as fully tested and configured for fast boot. Packed in a 3.52 MB RAR. A file like this is used to revive a board that will not post because of corrupted firmware, by writing the SPI chip with a programmer such as a CH341A. Since fast boot is enabled, keyboard entry into setup may be brief. Back up the existing chip and confirm the board revision and chip size before flashing.
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 →