MSI B85M-P33 V2 BIOS dump for the MS-7846 board, release C30, sized for a 16MB chip and compressed in a RAR of about 7.6 MB. Technicians flash such images to revive a board that does not POST because of damaged firmware, using a CH341A or similar SPI programmer. The MS-7846 number is shared by many MSI micro-ATX models, and the V2 suffix marks a later revision, so check both on the PCB. Read and keep the original contents before erasing and writing the chip.
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 →