Intel Flash Image Tool (FIT) version 16.1.25.2091, packed as a 14.9 MB RAR archive. FIT belongs to Intel's CSME System Tools and is used to open, edit and rebuild a complete SPI flash image, including the descriptor, ME region, BIOS region and soft straps. Technicians use it to build a clean image after ME corruption or to adjust straps. The FIT major and minor version should match the ME firmware family on the board. Always save a full read of the original SPI chip with a programmer before writing anything rebuilt.
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.