Firmware archive for a Dell OptiPlex 3000, labelled D12 Entry and OPTI3INSVosCM, tied to board number 212023-1. The six-digit number with a dash suffix follows the Wistron pattern, the ODM building this Dell platform. The 4.34 MB RAR holds an image meant for the system's SPI flash, used to recover a dead or bricked board with a hardware programmer. Compare the board number printed on the PCB with 212023-1, save a copy of the existing chip contents including service tag data, and check the chip capacity before writing.
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 →