BIOS image for the ASUS PRIME B450M-GAMING BR motherboard, an AMD B450 desktop board in the BR variant, compressed in a 19.7 MB RAR archive. The name indicates a 16MB image, corresponding to a 128 Mbit SPI flash chip on the board. Such a file is used to recover a board after a failed update or corrupted firmware by writing the chip directly with an external programmer. Check that the board variant matches, verify the chip capacity, and back up the current contents before you erase and write the image.
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 →