My brother had an iPod touch (3rd gen) that is jailbroken. I bought it from him and I wanted to reset it, so I could start from scratch. I went into settings on it and selected "erase all content and settings" and it turned to a black screen with a loading status symbol. I can't get it to do anything. I have tried holding down the power button, the home button, the home and power buttons together, I've plugged it into my computer and it won't register in my computer or in iTunes. I tried unplugging it and plugging it back in on both the computer, and the iPod. I also tried three different usb ports. Nothing happens. I would really appreciate and advice.