RAR archive of Intel Flash Image Tool (FIT) version 12.0.2.1087, a 5.28 MB package from the Intel ME System Tools set. FIT opens a full SPI image, splits it into descriptor, ME and BIOS regions, and lets you change ME settings before building a new image. Technicians use it to rebuild a clean ME region after corruption or to fix a board stuck in a bad ME state. Match the tool version to the major and minor ME firmware version of the target image, and keep a backup of the original chip dump before any write.
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.