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.
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