RAR archive with Intel FIT build 6.0.50.1260, a later release of the ME 6 Flash Image Tool for 5-series chipset systems. It reads complete SPI dumps, shows the region layout and lets a technician regenerate the Management Engine region and edit descriptor options. The rebuilt image is then written with an external programmer to recover boards with ME faults. Make sure the firmware in the dump matches the ME 6 branch, and keep a full backup of the original chip before flashing anything.
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.