My issue is when I try to update through Zune I get to step six "rebooting" and when it reboots my computer sees that the device has disconnected. When it "reconnects" it begins the long process of reinstalling the driver and in the meantime the update seems to "timeout" and gives the error "error 801812C1". I did everything suggested in the windows forum etc. and online wizard and still the same results. Windows recognizes the phone and Zune starts automatically when I plug it in and syncs with the phone. Is there any solution to my problem?