hey, i have a 3gs new bootrom, baseband 6.15.00, the production date is before the hardware change. i have been useing redsnow 0.9.9b9d to jailbreak on 5.0.1 and ultrasnow 1.2.5 to try and unlock. here is what i do. download 5.0.1 ipsw, use custom firmware button in redsnow to cook a coustom ipsw file, put iphone in pwned dfu and shift click restore in itunes to restore to the ipsw i just made. all goes well but after it has completed itunes says it cannot connect to the itunes store but the phone works fine so i jailbreak it with redsnow which hacktivates it and preserves the baseband, then i install ultrasnow from a repo that has it, for some reason the official ultrasnow repo is empty so i get it from another one, i install it and it says "unable to activate mobile data network" (i dont know what this means). i then insert sim and it searches and then says noservice. the carrier and network settings on the iphone show the correct carrier whatever sim i put in and all the other stuff seems fine, when i turn airplane mode on and off it still says no service, i have done it with 3g on and off and mobile data and data roaming on and off. i have tried doing all this again, re flashing baseband and re installing cydia and ultrasnow, but it doesnt want to play, i am obviously doing something wrong, anyone out their know what it is??? i would owe you one big time if you could help.