iPhone 4s. 5.1.1 2.0.12 Bought this phone off of Craigslist several months ago, it came with the Gevey card with everything working correctly. Using it to run T-Mobile. I accidentally updated the Carrier Settings via iTunes, and now it doesn't work with T-Mobile anymore, I just get this stupid Verizon automated message whenever I try to make a call. Is there anyway to delete the phone carrier settings I updated?