RAR archive of 6.53 MB with Intel FIT 14.0.47.1500. The Flash Image Tool from Intel's CSME System Tools reads full SPI images, shows region layout and rebuilds them with a new or cleaned Management Engine section and edited descriptor options. Repair technicians use it to restore boards whose ME data is damaged. Pair it with 14.0-branch ME firmware, since FIT versions are generation-specific. Store an untouched read of the chip before modifying anything, and verify the rebuilt file matches the flash capacity.
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.