When Apple released iOS 5.1 last week, the update didn't just break the previous jailbreaks. It also broke the software unlock for the iPhone 3GS and the iPhone 4 known as Ultrasn0w.
While this may not be a very big deal to most people, it's rather inconvenient for folks who need to use their iPhone on multiple networks. Luckily, a temporary fix has surfaced in Cydia known as Ultrasn0w Fixer. And even luckier, we're going to show you how to install it...