BIOS dump for the MSI B85M-P33 V3 motherboard, board code MS-7817, sized for a 16MB SPI flash chip and packed in a 15.3 MB RAR archive. Technicians use such an image to recover a board with corrupted firmware by writing it to the chip with a programmer like a CH341A. Read and save the original chip contents before flashing, confirm the board code and version on the PCB, and make sure the extracted image size matches the 16MB chip, as a mismatched image will not fit.
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 →