i had the exact same problem when i tried this to on my 8310. i dissconected it from the computer.
1. disconect from computer with battey out.
2. reinstall battery.
3. close BB desktop manager
4. after the BB starts up and is (verified) reconnect it
5. try to re update it. dont touch it a whole lot just try and leave it be while it does this.
6. if this does not work please let us know
