Downgrading...check this out

crystus

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Jul 17, 2009
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It is made for the Ipod Touch, so i am going to say no it will not work with phones. If you have a 3gs the only hope you have is to have stored your ECID info on Saurik's server. If you have done that then a simple mod to Itunes will allow you to down grade to 3.0 following the steps on his site. I had my info stored and was able to restore to 3.0 and stay away from 3.1. If you have a 3g or original follow the steps on saurik's site and you can down grade.

saurik com /id/12