Unknown error while updating ipod
Error 13 and 14: These errors are typically resolved by performing one or more of the steps listed below: Error 18 (or -18): This occurs when the media library on the device is corrupt and cannot be modified or updated.
Updating to the latest version of i Tunes and then restoring should resolve this issue.
Error 23, 28, 29: These errors may indicate a hardware issue with your device. Also attempt to restore while connected with the white USB Dock Connector cable that shipped with your device, on a known good computer and network to isolate this issue to the device.
Error 50: This error (and error -50) are timeout errors. Error 1000: If this error appears in the i Phone, i Pad, or i Pod updater log file, there has been an error decompressing and transferring the IPSW file that is downloaded by i Tunes when restoring your device.There may be third-party software installed that modifies your default packet size in Windows by inserting a Tcp Window Size entry into your Registry.