UEFITool version 0.3.0, a Windows executable for opening and analysing UEFI firmware images. Technicians use it to examine BIOS dumps, see the flash descriptor, ME and BIOS regions, extract or replace modules, and check whether an image looks intact before writing it to a chip. Version 0.3.0 is an early release, and later builds handle newer firmware formats better. Keep a copy of the original image while editing, and verify the volume structure after any change before programming the SPI flash.
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 @biosarchive. Enginerys does not host this file.