BIOS firmware for the ASUS A58M-A/USB3 desktop motherboard, version 1505, packed as a 3.74 MB RAR archive. Knowing the version helps decide whether it is newer than the one currently installed and whether it supports your processor. A file like this can be written to the SPI flash chip with an external programmer when the board no longer posts. Make sure the model is exactly the USB3 variant, since similar A58M boards use different images, and back up the original chip and compare sizes before flashing.
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 →