Q: error -1 trying to update ipod 8g

Hi there chirokari,

You may find the troubleshooting steps in the article below helpful.

Resolve specific iTunes update and restore errors

http://support.apple.com/kb/ts3694

Check for hardware issues

Related errors: 1, 3, 10, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 34, 35, 36, 37, 40, 1000, 1002, 1004, 1011, 1012, 1014, 1667, or 1669.

Try to restore your iOS device two more times while connected with a cable, computer, and network you know are good. Also, confirm your security software and settings are allowing communication between your device and update servers. If you still see the error message when you update or restore, contact Apple support.

Error 1015 might happen after making unauthorized modifications to iOS, also called "jailbreaking."

-Griff W.