A 19.9 MB RAR archive with Intel Flash Image Tool 14.0.0.1061, an early build in the 14.0 line; the size suggests other CSME System Tools may be included. FIT is used to examine and rebuild full SPI images, configure the flash descriptor and replace or clean the Management Engine region. In repair practice it helps recover boards with damaged ME data. Newer 14.0 builds may handle later firmware better, so match versions carefully. Back up the existing chip with a programmer and verify the rebuilt image fits.
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.