BIOS image for the Dell OptiPlex 7070 Tower on board 17509-3, a numbering style used by Wistron, compressed in a 10.3 MB RAR and marked tested in the name. It serves to recover desktops that fail to POST or hang after a corrupted firmware update by rewriting the SPI flash externally. Check that the PCB number and suffix match exactly, since different suffixes can indicate other variants. Dump and keep the current chip contents before programming, and confirm the image size matches the chip capacity.
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 →