Restore the phone to 3.0 and set it up as a new phone. Once that's done, jailbreak it again with redsn0w 0.72 preferably, but 0.8 will work too. It just seems that 0.72 works better for the 3G.
During the JB process, you should get the option to hacktivate your phone. This is what you need. Once Hactivated, your iPhone will no longer be stuck at the "Slide for emergency" screen. After updating Cydia, you can install ultrasn0w 0.9 from repo666.ultrasn0w.com
Hope this makes sense, if not, just ask.
08-01-2009 10:56 PM