Can you use the iPhone 4 USB charger instead of FireWire?
@andlopez1171 You must use a firewire AC adapter to finalize the restore process. A USB AC adapter will not work. It syncs with USB, but does not finish it's restore process without Firewire. I have 6 of them and do use a Firewire adapter to finish the restore process. While the iPod does technically charge over FireWire, the port that you're using has to be able to supply the necessary voltage. Some FireWire ports, as well as USB ports, particularly those found on laptops, don't necessarily supply a charging current, and therefore the iPod won't charge from such a port. You will need a firewire /30pin dock connector cable for this iPod. The iPod 4th Generation is a great MP3 player so go ahead and invest in an AC firewire charger.