Last week I got my brand new 3790T as a birthday gift, so yesterday I tried to install the new City Navigator Europe NT 2012.20 NTU on it:
1) .img map copied to the SD card on the Map folder: I tested it today, all OK
2) gmap3d.img copied to the SD card on the Map folder: I tested it today, all OK
3) D3048030A.JCV copied to the SD card, Garmin\JCV folder: I tested it today, all OK
Now, what I'm not sure about it:
a) D2925030A.G2S copied to the Garmin unit, .System\G2S folder, and D317400.db copied to the Garmin unit, .System\SQLite folder: now, when selecting/unselecting maps, under the name of the original installed map on the Garmin unit, CN Europe NT 2011.40 ALL, is written "trafficTrends Europe 4.25" What does it mean? Do trafficTrends and myTrends work with the new map 2012.20 NTU or I have to select the old map? Should I install the new map on the Garmin unit and not on the SD card to let trafficTrends and myTrends work?
b) ASR files: not yet downloaded as I'm not sure what to do exactly with them. Should I copy on the unit, to .System\ASR folder and overwrite the existing ones?
Thx all in advance for your feedback!