I'm having a problem using PwnageTool 4.1 to put my iPhone 3GS into DFU mode. Whenever I try, I make it to the final "Hold Home Button for 10 Seconds" screen and then the count freezes when it hits 6 or 7. I try to keep holding my home button till second 10, but then my phone just reboots like normal. Of course, trying to restore when I set it to DFU mode myself just returns error 1600. I've tried redownloading the firmware, rebuilding it with PwnageTool, and reinstalling PwnageTool to no avail. There isn't even anything bad in the log. Before anyone asks, I tried the ~/Library/iTunes/"Device Support" thing too, and I even tried putting my phone on a powered USB hub. No change. I searched Google, but the only people I found who claim to have a solution were talking jibberish. English is clearly not their first language. So I put it to you, the good folks of the MacRumors forums. Surely someone out there can suggest a solution? Thanks in advance!