I'm afraid it's not possible. The only iOS version you can upgrade to is iOS 7.1, which does not have a jailbreak. If having a jailbreak is important to you, you'll have to stay where you are until the next jailbreak is released, likely sometime after the public release of iOS 8 this fall.Hi, I have an iPhone4S jailbroke with evasi0n on IOS6.1 modem 3.4.01 How can I upgrade this to IOS7 and have it jailbroke again? Is it possible? Thanks in advance.