try connecting to your itunes...if it detects your iphone...click restore...after you restore your device, just activate,jailbreak and unlock it using ZiPhone 3.0...
no dude!restoring is last resort you fool!just hold power and home button and do a reboot!hold for about 8 to 10 seconds,it should blank out and show the apple logo in boot up.uninstall previous apps that you might have installed.only then if all else fails you restore.
i updated my 2g iphone to 2.2.1 using pwange i did a boot and now it is freezed on the pwange instead of apple logo and never enter .....i can not see it in any software ........HELPPPPPPPPPPPPPPPPPPPPPP