I was searching on the forum but it's not really clear to me which one.
I had TT on my old symbian v3 but the maps are old and I can't really find the old navcore.
Anyway I like Navigon , and red mn7 does the job but only on v3?
Can anyone help me out here?

There is a version of Garmin Mobile XT for Symbian, I once installed it on a Nokia 5800, You can use the latest maps as available from here.