Preserving your iPhone 4′s baseband is one the best things you can do for you and your iPhone. Read the following on how to update your iPhone 4 to iOS 5 safely. There are 5 different baseband versions since the iPhone 4 was released more than a year ago. They are 1.59.00, 2.10.04, 3.10.01, 4.10.01 and the latest being 4.11.08. All baseband versions can be unlocked except the newest that comes...