unknown error 9 and could not restore.

I was try to update my apple tv. Something went wrong and it told me to connect to Itunes. I did using my mac and usb cable. It saw my apple tv and started to download and restore my apple tv. I recieved an unkwon error 9 and stated it could not find my apple tv. I have the latest itunes and tried several times. Please assist.

Thank you