DOH50 mainboard BIOS from Wistron, board number 12311-1, code KWC14, revision A00, in a 3.55 MB RAR. The naming matches the Wistron practice of pairing a project code with the numeric board ID, a combination common on Wistron-built Dell boards. Unpack the archive and check whether it holds a full SPI image. Its size must match the flash chip on the board. Read and store the original chip before programming with a CH341A or similar tool, and verify the revision printed on the PCB.
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 →