BIOS package for an ASRock B75M motherboard, built on the Intel B75 chipset as the model name implies, in a 4.8 MB zip. No revision or firmware version is stated, and ASRock sold several B75M variants, so compare the exact model and PCB revision printed on your board. The image may be an update file or a full chip dump. When writing with a programmer, back up the existing SPI flash first and confirm the image size equals the chip 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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →