Hi, I hope this the right spot to post my question. I just got a Garmin GPSMap 78sc. I have some garmin maps on a micro sd card, USTopo 100v5, Canada HXCA015R 2015 the G2 version. My garmin recognizes these no problem. They are saved on the SD cards in a dir garmin\gpmapsupp.img.I also have HXUS039R US and Canada West Coast G2 version saved as garmin\gpmapsupp.img. When I try to access this on my GPSMap 78sc it says can't unlock map. How do I go about unlocking this to using this on my GPS? I can access this in Homeport no problem. The GPS has Worldwide DEM Basemap, NR, US Marine Detail g2 and TOPO US 100k v5 enabled. I'd also like to use Garmin's Lakes on in this also. Thanks, Jim
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