Hello My friend purchased his iPhone 4 from abroad, where he was able to use it without any problems. Granted, he was using a Gevey SIM and had to turn on and off airplane mode each time the phone booted, but aside from that it was fine. He's in the UK now and we've tried to upgrade the software to iOS5. It installed fine but it refuses it activate. The following appears both on the iPhone and on iTunes: "The SIM card inserted in this iPhone does not appear to be supported. Only compatible SIM cards from a supported Carrier may be used to activate iPhone. Please insert the SIM card that came with your iPhone or visit a supported carrier's store to receive a replacement SIM card." So, clearly the phone is barred and that is why it is refusing to work with various SIM cards. We've been trying to 'hacktivate' the iPhone using Sn0wbreeze 2.8b8 by creating a custom ISPW with hacktivation enabled and then restoring it via iTunes. However, it stops at the Apple logo and refuses to load. Any ideas? Thanks.