I have a 3GS (new bootrom I think but that's not the point here) that I jailbroke using Spirit. Bought MyWi and installed that. Upgraded to iPhone 4 which was activated at the Apple store. Set up my new IP4 from the last back up from my 3GS. Now, when I look under Settings>Network I have the option to tether which I assume is a holdover from my backup. It's also showing AT&T 7.0. My 3GS is showing AT&T 5.6. The question is if I try to enable it, will it work, or will it disappear until the IP4 is jailbreakable and I can reinstall MyWi? Yes, I know I can try it, but I'd prefer not to and lose it. I have: IP4 running iOS4, official AT&T. Anyone know if it'll work? And, do you think if I upgrade my 3GS, I'll be able to jailbreak using pwnage tool?