Intel Flash Image Tool release 14.5.25.1229 in a compact ZIP of roughly 8 MB. FIT belongs to the CSME system tools and lets a technician parse a full SPI dump, edit the flash descriptor, swap in a fresh ME region and generate a rebuilt image. It is mainly needed when the Management Engine region is damaged and a board shows long boot delays or shutdowns. The 14.5 branch targets ME 14.5 firmware, so check the version in the dump first and always back up the original chip.
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 .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip