Just rename your "gmapprom" to "gmapsupp" and create a new folder into your sd-card and name this new folder "Garmin".... next copy your "gmapsupp" file inside this Garmin folder.
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has anyone got this to work on the uconnect? im trying to update a 2015 T&C, and im not sure what files i need. i tried an unlock map, but it said not compatible. i never delt with jvc files or sid files etc... anyone figure this out?
is there anything else i need to do before i load theses maps into my headunit?