After installing Navigasi v2.58 , i installed the mapsource map and tried both the FULL customized and ORIGINAL options from installation and both are working fine on MAPSOURCE and i can zoom to street level in MAPSOURCE, but on my EU 3790T the navigasi v2.58 img is NOT displaying the street level when i zoom it to less than 3 or 5km. So the roads and everything disappear from screen when i zoom it (I tried this in a town called PURWAKARTA, between jakarta and Bandung ). I do not understand why this happens. While i do this only Navigasi v2.58 is selected under MY MAPS in 3790T settings. Anyone experienced similar problem? Any solution?