Ever since I JB'd + Unlocked (had to, because I switched carriers), my iPhone 3GS' GPS won't work. Is there any way to fix it, or should I just wait for greenp0ison to come out for PC?
Did you use the IPad baseband hack? If yes, that's one of the known issue with doing that. And, Greenpoison JB won't fix that. If no, restore and re-JB.