I just picked up a Lumina 822 for XMAS. So far just getting the hang of it. You could put extra maps on the microSD card which I think can be up to 32 gig.
Looks like the GPX Viewer will do the trick. Garmins Windows app may work as well. But I am still a ways from using this app which was designed for Windows Phone 7 I guess.
I never intended WP8 for the primary MC Navigation as I have a Zumo (crap for following archived tracks though). I wanted a backup nav system and a way to get weather on the road.
First trip complete. But still learning!
Twohondas screwed with this post 12-30-2012 at 02:53 PM