Pretty much as subject: I have an iPhone 3GS on jailbroken on 4.1 with BB 06.15 that I want to update to 5.01. I'm not bothered whether its jailbroken or not and I don't need to unlock as I've now got it factory unlocked. I've searched and I can't find what I need to do. Can anyone spare a minute to point me in the right direction? Ta.