I have a iPhone 5 with 6.0 and back home I sync with my MacBook. I won't have access to it for another week, is it possible to use it to restore as a 6.1 using a borrowed windows pc, jailbreak it, use my iCloud backup to set it up, then continuing to use it with my Mac as usual? I remember a couple of iPhones ago when we changed it from windows to Mac you had to restore, and I'm worried about a 6.1.1 by the time I get home. Hope it wasn't too consuming!