Alright, I've seen some people talking about QuickPwn bringing them to a White screen on their iPod's/iPhone's while they were trying to jailbreak 2.2. I suffered from this and the 10.5.6 DFU issue while trying to Jailbreak my 16gb 1st gen iPod Touch. Firstly, to get around the DFU issues, just use a USB hub. I found a solution that might work for you. Run QuickPwn as normal up to the point where it makes you put your device in DFU mode. When your screen goes white on your ipod, just let QuickPwn finish out its transfers on the computer screen. Then unplug your ipod then plug it back in. iTunes will pick it up as being in DFU mode. Then shift+restore and find the ispw that QuickPwn made (should be on your desktop). Go ahead and click on it. It should start and you should be good then. Worked for me! Sorry if this is old.