has anyone JB ios 5 beta 2? if so what are your thoughts and is it worth doing although its a tethered jb? i see that beta 2 is a lot less buggy and seems to support better .... also if i dnt wanna be jb for any reason is it as easy as restoring back to beta 2 on itunes? thanks for any suggestions and once again sorry if this has been asked but i wanna make sure i can unjailbreak if i want to at any moment ... been hearing that its hard or impossible to downgrade from ios 5