hey guys, this is my first post so hopefully somebody can help me. i'm on windows, and i have a 16gb iPhone 3G with firmware 2.2.1 installed. i wanted to re-jailbreak my iPhone after the upgrade, so i downloaded the quickpwn update from http://www.installerapps.com/2009/01/27/jailbreak-221/ and ran it using quickpwn. quickpwn runs fine, but when i try to jailbreak using the 2.2.1 firmware, i get an error saying "Firmware error string." does anyone have an idea why this is happening? i know it's a legit .ipsw file (i've used it to restore my iphone with itunes before) so i'm not sure why this is happening.