I'm replacing my 4S with iOS 5.1.1 for another 4S. I've invested quite a bit into downloading and setting up packages on the phone and I don't fancy having to do it all again. Is there a way to essentially copy the entire phone, with all the Cydia packages onto another? I've heard of SHSH but I couldn't find any information on it. I think I've saved an SHSH blob using TinyUmbrella but I'm not sure.

Any ideas?