How to Put your Apple iPod or iPhone into DFU mode
If you own an Apple iPod or iPhone, and you want to unbrick it, you'll need to prepare the device first. This video will show you how to put your Apple iPod or iPhone into DFU mode, which means Device Firmware Update. You'll need to attach the Apple device to your computer for iTunes. If you're looking to jailbreak the iPod, this will help you get to that step.