Maps name is gmapsupp.img ,but in new devices you can rename them anyname.img.
Put them in Map folder in your 3790, the same in sd : Map folder
I have a Nuvi 255W where I put, along with the main map (gmapprom) an aditional map named imgsupp.img and it would recognize both. I now bought a 3690T and copied the imgsupp.img file to the hidden .System folder, to the Garmin folder, to the root folder. But the unit will not see it. Only if on an external microSD. Is there a solution for having an additional map sitting on the main memory?
Maps name is gmapsupp.img ,but in new devices you can rename them anyname.img.
Put them in Map folder in your 3790, the same in sd : Map folder
You have to navigate to get to the good.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600
Mate, that was great! There was no map folder in the main memory, so I had not tried there. Works 100%. Tks a lot.
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