So I went into Cydia (I am on tethered jailbreak ios 5.0.1) and it told me I needed to upgrade essential items. I selected upgrade, I reloaded springboard, and now my iPhone 4 keeps going to a loading screen, showing my lock screen for about 5 seconds, and then loading again. It has been doing this for about 15 minutes now. Does anyone know what is wrong and how I can fix it? :s