I just bought a used BMW Zumo and updated the firmware, which was successful. I tried updating the maps from the 08 maps to the 2010 maps and it quits after 73% and says something about network failure. I didn't back up the garmin which was a big mistake, now I can't even enter addresses with it because it didn't get that far in the loading of the maps. Anyone run into this before? I tried asking on zumo forums with no response.