BIOS firmware for the ASUS X509FAC mainboard, revision 2.0, in a 6.43 MB RAR archive. The name lists no BIOS version, ME state or flash chip size, so verify the extracted image length against the chip on your board. Technicians program images like this onto the SPI flash with a hardware programmer to recover a board with corrupted firmware or a no-display fault. Check that the revision printed on the PCB reads 2.0, and read out and save the original chip before writing anything.
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 →