Every time I try to update my Garmin Nüvi 1300, the app stays on 0.0% even after fifteen minutes or more have passed. Extremely frustrating. I have tried restarting the Mac, formatting the SD Card (so now I don't even have the maps I used to have, before I decided to try updating!), and checking for the latest version of the Garmin Express app. But the update sticks every time.
