ASUS PBH61-M LX3 PLUS firmware for board revision R2.0; the name also gives 2.01, likely a BIOS version, and the RAR measures 3.99 MB. This is a different model from the plain PBH61-M LX, so do not mix the two. Use the image to rewrite the SPI flash with an external programmer when the board does not post or after a failed update. Dump the original chip first, confirm the model and revision printed on the PCB, and verify that the binary length matches 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 .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 →