A 5.06 MB RAR with Intel Flash Image Tool 11.8.55.3510. This Windows program from the ME System Tools reads a complete SPI dump, separates the flash descriptor, Management Engine and BIOS regions, and rebuilds the image once a clean ME firmware is supplied or settings are changed. Technicians use the rebuilt binary with a hardware programmer to recover boards with ME problems. Confirm the image uses 11.8 ME firmware, check the output image size against the flash chip capacity, and back up the original 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 @mfittool. 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.