Hi everybody, i have been unlocking mobile phones for about 6 years now as a business, a friend of mine purchased an unlocked iPhone from ebay a week before they were released in europe/UK he had it working for 2 hours on the Vodafone UK network, but unfortunately connected it to his PC to install some music tracks,and yes you guessed it iTunes updated his firmware to 1.1.2 and relocked his iPhone so no SIM would work,after trying several solutions he found on line he ended up turning it into a paper weight,in desperation he asked me to look at it and after reading and researching and asking lots of questions i was told to downgrade it, i now have the situation that the version is 1.0.2the modem firmware is 04.02.13_G but the IMEI is 0049990 the iPhone is jailbroken,it seems activated as i can access settings,Safari, etc but no SIM works so what is the next stage needed as it was not 1.1.2 out of the box i am not sure which solution i should be using could somebody out there please show me the next steps i need to take to get SIM to work,Thanx in advance.