Activating ATT service on an unlocked iphone

[flipmcneil]

I have an activated and unlocked iphone running on Suncom's service. My plan with Suncom is fixing to run out and I need to switch to ATT for business reasons. Is it possible to activate service with ATT after the phone has been jailbroken and unlocked? It is a 1.11 out of the box phone. Thanks for the help

[redcard]

You can just upgrade to 1.1.2 and register in itunes, assuming you have the original AT+T sim

[flipmcneil]

I do have the original ATT sim card. So all I have to do is put the ATT sim back in, upgrade to 1.12 and register the phone in itunes?

[redcard]

Yeah