Sorry for asking so many questions lately, this should be my last one. Okay so right now I am on 3.1.3 jailbroken. I am on cydia and for some reason it says I have blobs for 4.0, 4.0.1, 4.0.2 and 4.1 but no 3.1.3. I am assuming that anything lower than 4.0 does not have blobs. That is weird because my phone has never gone past 3.1.3 firmware. What I want to know is that if I go to 4.1 will I be able to downgrade to 3.1.3? I want to test out 4.1 and if it is slow I am going to stay on 3.1.3, but I am scared that if I do upgrade I can't downgrade because I do not see any 3.1.3 blobs.