I'm currently curious about upgrading to iOS7. I am currently on iOS 6.1. If I were to upgrade to iOS7 and wish to downgrade to iOS 6.1, all I need is the saved SHSH blob or whatever it is called? I have one stored on my computer from when it was still being signed. How would one go about restoring to 6.1 with the SHSH blob? Also, I was wondering if it would be better to attempt to sell my device as 6.1 with Jailbreak as I know there are still holdouts, and iPhone 5 (the phone I have) is the strongest phone that can do iOS6.x. Would this be something I should look into or try iOS7 first to see if I even like it before contemplating selling? Any help is appreciated. Thank you.