Gigabyte B85M-D2V-SI desktop motherboard BIOS for revision 3.0, as stated by the R3.0 marking in the name. The image is 4MB, which matches a 32 Mbit SPI flash chip. Technicians use such a dump to restore a board that is dead after a failed update, by writing the chip with an external programmer. Unpack the RAR with any common archiver. Back up the existing chip contents before flashing. Make sure the PCB revision reads 3.0 and the chip capacity matches the image.
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 →