BIOS for an A770M-A motherboard, revision 1.0, in a 516 KB ZIP; the name gives no brand, and several makers used similar AMD 770 chipset model names, so confirm the vendor on the board. The image is meant for writing to the BIOS flash with an external programmer when the board fails to post after a bad update. Extract it, compare the file size with the flash chip capacity, read and save the existing contents, and verify the revision printed on the PCB.
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 →