사용자에게 답변하기: im having trouble restoring my iPod classic.Ive been fixing a ipod photo this week. I read somewhere that USB supplies 5V where as firewire supplies 15. I dont own any firewire cables or even have the port on my computer anymore so I looked at buying a firewire charger, its quite hard to buy these cheaply now. There is another solution though you dont need a firewire cable you just need the wattage. My ipad air uses a 12w charger which is rated to work with all iphone and ipods from 4th gen onwards. I was a little surprised but it booted up immediately.