CLIFF NOTES:
I upgraded my Verizon XV6800 using this build (
http://forum.xda-developers.com/showthread.php?t=409655) and the phone boots in to Windows without issue but cannot aquire signal. Any clue what might have gone wrong?
EDIT:
I saw this thread (
http://forum.xda-developers.com/showthread.php?t=390609) about dialing *22803. I hung up when it first said it was programming so that I could dial ##778 but then I got an error "Initial programming required". I dialed *228 and it programmed my phone and now things are better.
Although - I still can't press ##778 to edit the A-Key.