Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)
It's early, so it's very possible, and even highly likely that I'm wrong, but I think u just restore to 5.0, and go thru the prompts on wifi, it will try to activate, idk what will actually happen if it doesn't activate as I've not tried.