Intel Flash Image Tool 12.0.20.1301 in a 5.62 MB RAR file. Part of the CSME System Tools set, FIT builds SPI flash images from descriptor, ME, BIOS and other regions and lets you adjust platform straps and settings. It is commonly used to produce an ME-cleaned image from a board dump before reflashing with an SPI programmer. Choose it for ME firmware in the 12.0 line. Keep a verified copy of the original chip, and ensure the resulting binary size matches the flash chip installed.
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.