Did you add the unicode 2015.10 from here? If so, maybe your problem is that some early EU/UK 3790LM had the non-unicode EU/Regional as OEM. Therefore your unit may be 'up to date' in the sense that 2014.40 is the current non-U. Have you checked in myMaps as suggested in [Only registered and activated users can see links. ] of that other thread? You might need to first register it in myGarmin if you haven't done so yet.
Bookmarks