Hi All ,
I searched the web for this problem and found only this thread...
I have exactly the same issue.
I also have a NOKIA LUMIA 800. This is a windows Phone so you can not use Nokia Ovi suite or any of their other tools. You have to use Zunu. Which is really a Pain...... If you thought that by Ovi suite is bad, you can get worse...... but that is a different discussion. ..... Zunu does not have anything in there to download Maps. So you HAVE to use Wifi
So I download a map, get stuck at 90 % or so and than is says "a Wifi connection is required to download maps......"
It does not show up in the list of downloaded maps. Every!!! map I download ends at 90% with the same error. Trying the same map twice immediately gives this error..