Firmware archive named for a W86 motherboard, version C, compressed in a 3.39 MB RAR. The name gives no brand, chip type or firmware version, so open the archive and identify the image before use; W86 style names are often used by Clevo-type barebone boards, but confirm against the PCB marking. Dumps like this are written to the SPI BIOS chip with a programmer to recover a board after a failed update. Match the image size to the chip capacity and back up the original contents first.
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 →