First off, let me apologies for my 'noobiness', but we all have to start somewhere. I've heard of these before but never really have backed it up or understood how they're used. I know they're for downgrading to a lower version of iOS if you ever need too, or at least I think they are...? At the moment I'm on iOS 6.1.1 on my i4S, I've downloaded the newest version of TinyUmbrella, when I open it I get some pop-ups about requesting SHSH from cydia and another one, it recommends I turn off 'Request SHSH from Cydia' which I have done. Could somebody tell me which options to use and how to properly use an SHSH blob? I have an iPhone 4S, running iOS 6.1.1 which is NOT unlocked, I have it on contract with T-Mobile (EE). Any help would be really appreciated as I want to be fully secure and be able to jailbreak again even is an iOS update is released which stops jailbreaking for a while. Thanks! EDIT: I followed http://www.idownloadblog.com/2013/02/02/how-to-save-shsh-blobs-for-ios-6-1/ to save my SHSH blob, but I'm still unsure how to use them in the future to downgrade to 6.1.1 if I need too, so Any information on that would be nice, thanks!