i have an iphone 3G 2.2 version, 02.28.00 modem firmware. It is unlocked and jailbraked and yesterday after a reset (with cable plugged-in) i saw a message on the iphone's screen "activate iphone" so i tapped on it and since then itunes won't sync... it says that the sim inserted it's not recognized (but the phone works with any sim and there's no problem). How can i sync with itunes? Do i have to jailbreak/unlock again?
Thank you for your time!