Downloads two patches (from or a custom location, or using locally provided files) to patch the file to 1.0 and a different patch which applies community-made changes to the game.Extracts the full JK.EXE included in the patch.Extracts 7za.exe (and license) from itself.Downloads the JK 1.0.1 patch (from or a custom location, or use a locally provided file).Uses the official LucasArts Star Wars: Dark Forces 2: Jedi Knight 1.0.1 patch to generate three different versions of the main JK.EXE binary suitable for using mods (or bypassing Steam DRM).