Intel FIT version 9.0.21.1452 stored in a 1.11 MB RAR archive, belonging to the ME 9.0 series of system tools. The Flash Image Tool is used to open BIOS images, check region boundaries and descriptor straps, and rebuild the Management Engine region with default configuration. It is a common step when a laptop dump carries a dirty or corrupted ME. Confirm the board runs ME 9.0 firmware before using this build, and read the original SPI content to a safe file before reprogramming.
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.