Dill Huang, who has been trying to make a programmable 112 exploit for iPhone 4 users has revealed that the same exploit works with iPhone 3GS on baseband 05.16.02. Ultrasn0w unlock for baseband 05.16.02 is not yet available. Instead, iPad-upgrade-baseband method is available to unlock iPhone 3GS on iOS 4.1 and later.
Good news: 112 exploit works on BB 5.16.02 as well, so theoretically a larger version of Gevey should work for your 3G/3Gs as well
So, maybe GEVEY producers will also launch a larger version of GEVEY Sim for iPhone 3GS. If that’s the case, then iPhone users who don’t want to upgrade to iPad baseband for the unlock will be able to see signals on their iPhones. iPad baseband is reported to have some Navigation problems on iPhone 3GS. So lets wait and see what comes ahead..