BIOS ROM for the Intel DX58SO desktop motherboard, code-named Smackover, an X58-chipset board for LGA1366 processors. The RAR holds the ROM image, and the name gives no BIOS version. Intel desktop boards could normally be updated through Intel's own tools, but an external SPI programmer recovers a board with corrupted firmware. Check that the image size matches the chip on the board and back up the existing contents 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 →