A 6.34 MB RAR containing Intel FIT 12.0.85.1919, a later revision of the version 12 Flash Image Tool. The utility is a Windows GUI that reads a complete SPI image, shows the descriptor, ME, GbE and BIOS regions, and rebuilds the image after you edit ME configuration or replace the ME firmware binary. It is commonly used to produce a clean ME region for boards with ME errors or long power-on delays. Use a tool build matching the ME firmware generation of the image, check the output size equals the flash chip capacity, and back up the chip first.
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.