Yesterday i got very lucky and used the zune trick and updated my 800 ( i am on telus)....First few times i disconnected too fast, finally got it to work when i disconnected between 4 and 5 seconds). Had to do the disconnect 3 separate times to get the 3 updates, but it worked perfectly.. I am loving the 7.8. Good luck, i would definately try again, i am sure i tried at least 4-5 times before i got it to work the first time,and stupidly, the first time it worked i forgot to reconnect....it is definately all about timing, and can be very frustrating!