just did the 2.2 upgrade and jailbreak through winpwn and it went fine, plugged iphone into laptop, opens up in itunes saying set up your iphone. setup as new or because my iphone had synced from the laptop before i can use that, i chose to use that and it's now restoring iphone from backup. will it still be 2.2 when it's finished or have i just put it back to 2.1? i thought it would just sync all my stuff back.
As far as I am concerned you can only use pawnage or quickpwn... With that said, try and restore your device again and run quickpwn to jailbreak it if it is a 3G or to jailbreak/unlock if it is a 2G.