Hi, when I activate my iPhone 4 with 4.0.1. with my phonebook Sim, everything is fine;
After installing Cydia via Jailbreakme.com and installing unltrasn0w the phone restarts and stays activated. When I take out my Phonebook Sim and insert my O2 Card I fall back to activation Screen, get full signal, SMS is comming in and I can receive calls - but stucked at activation screen! What happened ?
Yesterday I did the same without any trouble :spinme