BIOS firmware for the MSI MS-7A38 board, revision 1.0, sold as the B450M Bazooka and also the B450M PRO-VDH, both AMD B450 micro-ATX models. The 8.88 MB RAR suits reflashing the SPI chip with a programmer when the board fails to POST after an update. Since one MS-number covers two retail names, verify the PCB code and revision rather than the box. Back up the original chip before writing, and confirm the image size matches the flash 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 →