Quote Originally Posted by Kurt Franz View Post
...... I want to build the PC install exe file that will load my gmapsupp.img file into Mapsource in the same manner the garmin install dvd would do it .....
Then as Neil said in both Posts 7 & 9, you need to find a GMAP folder for the 2022.25 City Navigator. There's no EXE files used by Garmin any more, that method finished many years ago for loading install data to a PC for CN mapping.

Maybe you're still a little unsure about all this, so to be absolutely 100% clear - there's no way to directly load parts of an existing IMG file by using any official Garmin software like MapSource or MapInstall. They only use install data from the PC's ProgramData/Garmin folder, stored in a *.gmap folder.

It's not feasible, albeit technically possible, to reverse-engineer an IMG file because the result will not contain routing data so it would be useless for navigation other than as a moving-map situation to keep track of your location.