Hi. I have used Spirit to jailbreak this 3GS which I have got from apple store recently as a replacement; I think it may be a refurbished model. But this all works fully and no problems with this. But then I used ultrasn0w v0.93. (I have searched everywhere, which people have been saying will unlock any iPhone; new and old bootrom which has been jailbroken.) So I put in another SIM card and it asks me to connect to iTunes, but then it will display within iTunes (v9.1) a message telling me the carrier is not support. This message reads: Is there something i'm missing here or does the unlock not work. Thanks for any help.