I've researched the web for days with no luck...
I hope someone smarter than me can tell me what the Fukuoka is going on with my Montana.
I had this GPS for a few years and it worked flawlessly with my Australian Topo Maps, I then moved to Singapore and got some (genuine) Garmin City Navigator Maps on SD Card.
From day one I had problems:
I usually start navigating with no issues up until the point where the 3D arrow gets stuck and doesnt move anymore.
I can see the GPS is still working as the distance to the next turn ois going down as I ride, I can even check my speed.
If I try to move the map around it doesnt show anything but a blank area.
At some point it starts working again almost as if it couldnt read the data from the SD card and then is was able to.
Once I got home I tried to simulate the navigation following the same itinerary I jsut rode on.
Sure enough the problem happened again. At the very same location.
I need to also point out I thought my maps were dodgy (eBay purchase) so I've got some new ones however the issue is still here.
I have actually shot a video of it (of terrible quality..)
http://www.youtube.com/watch?v=S3AAk...ature=youtu.be
If anyone can find a solution will have a dinner on me! (T&C apply ;-)