For those who don't want to mess around with internal memory you should know that you can copy Auto Drive's jcv file into your SD using the directory Garmin\JCV\F2933892C.jcv. Also if you have version 3.30 with it's two files named gmapprom.img & gmaprrom.unl in your SD inside the "map" folder then Auto_Drive_Hellas_v4.00T.exe will do the update for you and it will even create a JCV folder inside Garmin folder to host the F2933892C.jcv file. This way works great with my 3490.
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