I'm looking to delete everything off my Verizon iPhone 4 that I'm going to be selling and was wondering how I can do this and still KEEP my firmware version. Currently I have iOS 6.1 (10B141) jailbroken and want to keep it that way. (the 6.1 part, not the jailbreak.) Also before I jailbroke I think I saved my SHSH blobs but I can't find them anymore. What can I use to save the SHSH blobs? and should I do this before or after I delete everything off my phone? Any help is appreciated, thank you!