Some of you who unlocked iOS 4.2.1 or 4.1 with ultrasn0w may have noticed something weird — like problems with GPS. No, you’re not crazy: The iPhone Dev-Team noted this issue on its blog, but states that it’s not a universal bug. So some of you have it and some of you don’t.
The issue affects iPhone 3G and 3GS unlockers using ultrasn0w 1.2 with the iPad baseband 06.15.00. Here’s what the Dev-Team has to say about it:
Unlockers have been reporting mixed results about GPS functionality at 06.15.00. Until we can track down what differentiates those who retain GPS vs. those who lose it, be conservative and assume you’ll lose GPS at 06.15.00. As we work on finding the cause (and possibly a fix), please report your personal findings in our comments section. (Update: early indications are that while 06.15.00 is capable of GPS, it will require some further hacks. But please still be conservative and assume you will lose GPS at 06.15, in case the hacks don’t work).
Have you experienced this? Let us know in the comments. (And if you were planning to unlock using the iPad baseband, but just haven’t gotten around to it yet, take heed.)