BIOS archive for the Dell OptiPlex 3090 desktop on Wistron board 212037-1, marked as tested. Wistron uses numeric project codes with a revision suffix for its Dell motherboards, and the matching number should be visible on the PCB. At roughly 10.6 MB the RAR likely holds a full SPI image, but check its contents after extracting. Technicians flash it with a hardware programmer to revive systems with corrupted firmware. Read and keep the original chip first, then verify the image size matches the flash.
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 @generalbios. 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 →