I have tried renaming the gmapsupp.unl to D046800.unl but it will not work on the garmin 3580LMT. The message I get is that theGarmin Language Guide is Locked. I used Jetmouse's Keygen and added 900 2 0 0 for MapID, PID, RgnID and VenID and the Garmin Unit number.
It works fine from the SD memory card.



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