BIOS archive for ECS desktop boards B75H2-M and Q77H2-M, version 1.0, which the name groups together. Both are Intel 7-series chipset boards, so check which model you have and pick the matching image if the archive contains separate files. A programmer such as a CH341A lets you restore a corrupted SPI chip on these boards. Save the existing contents before writing, and confirm that the image size matches the flash device fitted to the board.
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 →