BIOS image for the Intel DG31PR desktop motherboard, packed as a RAR archive of 507 KB; the ND suffix in the name is not explained further. A technician uses such a dump to recover a board that fails to POST after a corrupted update, writing it to the SPI flash with an external programmer such as a CH341A. Before writing, read and save the original chip contents, confirm the board model printed on the PCB, and check that the extracted image size equals the capacity of the flash chip fitted.
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 →