Working BIOS for the MSI B450M Mortar desktop board, MS-7B89 version 1.1, supplied as a 10.8 MB RAR archive. The image can be written to the SPI flash with an external programmer to revive a board that is bricked by a failed update or does not post. Keep in mind that AMD AM4 boards can lose support for older CPUs on some BIOS releases. Back up the existing chip before writing, confirm that the file size matches the chip capacity and that the board version is 1.1.
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.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 6 May 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | Open file on RM Schematics |
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 →