Hi, I have a new 3gs with 3.0 and jailbroken. I have already got my 3.1 ECID SHSH on file with cydia. So my question is, can I upgrade to 3.1 and than jailbrake it again using which ever tools? I have windows vista, I read somewhere some people upgraded to 3.1 and than jailbroken it. I could have read wrong and that is why I am checking Here before I regret anything. Thanks in advance everyone.