A small 913 KB RAR with Intel FIT version 10.0.60.3000, a Flash Image Tool build from the ME 10 branch. Technicians use it to load an image read from the SPI chip, check the region layout and ME options, insert clean ME 10 firmware and build a ready-to-flash binary for a hardware programmer. The archive size is modest, so it may contain only the tool without extra documentation. Confirm the board's ME firmware is version 10, save the original dump before any write, and make sure the result matches the flash chip size.
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.