Firmware for the MSI B75A-G43 GAMING, a variant on the MS-7758 platform, in version Q20 according to the name. The ZIP archive weighs 7.07 MB and should contain the BIOS image suitable for flashing through the board utility or with an external SPI programmer. Because MSI reuses the MS-7758 code across several models with different chipsets, applying this file to a Z77 version can leave the board unbootable. Verify the model name on the PCB and keep a backup of the original chip before writing anything.
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 →