Unlocked 2G iphone - requests activation with at&t sim?

[viperrepiv]

Hello all,

I unlocked my old 2G iphone, and it is still running OS version 2.something. The unlocked was working perfectly as I previously used a foreign SIM card for several months while I was traveling out of the USA. Anyways, back at home, I have a 3GS now, and I decided I want to give the phone to my dad to use.

He puts his at&t sim in the slot, but for some reason it is giving me the emergency and "connect to itunes" screen....seems like it wants to be activated. He does not want to use a data plan, so would rather not sign up for a contract.

Anyone have any idea what is going on here? It is supposed to be unlocked, so I'm not sure why it is asking for activation. The SIM is pretty old - not sure if that has anything to do with it.

[i.Annie]

Should work. Have you tried restore?

[mectech]

It's a new development,sim are now locking to the iphone, after unlocking.