i try with Map folder on sdcard ,autside and inside garmin folder , i put in garmin folder Map and my garmin not see nothing ! i have Garmin nuvi 1390T with premium trafic T.M.C. and nuvi maps life ,with last firmaware . now im sure is from Garmin this problem , probabil from last update firmaware and maps my garmin is ,,fixed " from Garmin company do not see more maps ...thank you for yours atention