Now, I have an iPhone 3Gs on 4.2.1 Firmware with 06.15.00 Baseband. The serial ID of the phone is XX945XXXXXX and when i put it in to the recovery mode it says "iBoot 359.3.2".
What can i do to upgrade the firmware and the still have an unlocked Baseband (it it's possible, not the 06.15.00) ?
Thanks a lot ! :)