A RAR archive of 14.3 MB holding Intel Flash Image Tool build 16.0.15.1662. The utility comes from the Intel CSME System Tools package and works on full SPI flash layouts. It can decompose an existing dump, swap in a fresh ME region, edit descriptor settings and output a new binary for a programmer. Use this build only with firmware of the same version-16 family, because FIT releases are not interchangeable across ME generations. Keep an untouched backup of the original chip contents before experimenting.
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.