Zipped firmware for a B75M-A motherboard, revision 1.01 according to the name; no brand is stated, though the model name matches an ASUS desktop board. The archive should hold a BIOS dump intended for direct programming of the onboard SPI flash. Before writing, check that the PCB silkscreen shows the same revision, back up the existing chip contents, and verify that the image size equals the chip capacity. A clip-on adapter often allows in-circuit flashing, but desoldering the chip is more reliable when the board backfeeds power.
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 →