iOS 4.2 Jailbreak and Unlock to Follow 2 Days After 4.2 Release
The Ultras now unlock will be compatible with the iPhone 3GS and 3G on iOS 4.1 and iOS 4.2 running the 05.14.02 baseband. Before updating your iPhone 3G or 3GS to iOS 4.2 you would be wise checking to see if the baseband is getting updated in that release.
you will need to either leave your phone on iOS 4.1 to unlock it, or use a tool to upgrade to 4.2 while preserving the older baseband.
it is for those who wanting to unlock the iPhone 4.we will come soon with more details.