I just restored my iPhone 3GS to 4.0.1 from 4.0.1 and now I am getting this message. When I bought the phone it was already activated as I bought it used and then I jailbreaked and unlocked it. I have saved my SHSHs in 4.0.1, if that helps. How can I activate this phone because I do not have the sim card required to activate.... Please let me know.