BIOS package for the MSI B250M Bazooka, board MS-7A70, version 7A70v17 following MSI's project-number-plus-version naming, zipped at about 5.3 MB. It can be written with an external SPI programmer to recover a board stuck after a failed update, or used through MSI's own flash tools if the board still boots. An image prepared for a programmer may need a correct size match with the onboard chip. Save a dump of the original first, as it holds the board's MAC and serial data.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →