MSI BIOS for the MS-7778 desktop motherboard, EREV 1.0, AMD platform, with the name indicating an 8MB flash image, inside a 3.93 MB RAR. Extract it and check that the binary equals the 8 MB capacity of the SPI chip before programming. It is used to recover a board that fails to POST after a bad flash. MS-7778 boards were also sold under OEM brands, so match the PCB number and revision, and dump the original chip with a programmer first to keep a fallback.
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 →