when i go to Cydia it has in green on the home page the following ios under SHSH: iOS 4.0, 4.0.1, 4.0.2, 4.1, 4.2.1r1, 5.0.1. No i didn't add anything. When I jailbroke it a few weeks ago (before that was running an original iOS 3 something jailbroken and unlocked) it didn't really work too...