There are many jailbreak (root) tools, free and paid, for iPhones and iPads. However, this one simply is the best, because: 1. Free. 2. Untethered. Once jailbroken, jailbroken forever. 3. Trusted. The team has worked on jailbreaks for years. Oh, yes, It is GreenPois0n Absinthe, you probably tried it before. Now try the latest version (0.4) for iOS 5.0.1.