Can i unlock or jailbreak my iphone 4? Its baseband is 04.11.08 I just want to unlock it for tmobile..
Does each IPhone come with a different baseband?
If you've already upgraded to iOS 5, you've locked yourself into the current baseband, and to date the only way to unlock it is to use Ultrasn0w, and that only works if your baseband is:
iPhone 4 - 01.59.00
iPhone 3/3GS - 04.26.08, 05.11.07, 05.12.01 and 05.13.04
If your BB is any of the above, you can unlock successfully with a jailbreak and download of ultrasn0w, which are both free..