Intel Flash Image Tool 10.0.46.1002 in a compact 1.17 MB RAR archive, from the older version 10 ME System Tools. Like later FIT releases, it parses an SPI flash image into descriptor, ME and BIOS regions, allows ME configuration changes and rebuilds the image with clean Management Engine firmware. It suits boards whose image carries ME 10 firmware; newer 11.x or 12.x tools will not substitute. Check the ME version in the original dump, keep an unmodified backup and verify the output fits the 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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.