A repair software package. Shared as “MStarBinTool-GUI_x64_v2.4.1.7z” — a .7z file, 3.28 MB.
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 @tvcodeservice. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
7-ZipWinRARKeka (macOS)