Symptoms
When restoring or updating an iPod in iTunes 7 or later, you may see a dialog reporting "An unknown error has occurred" followed by the error number 1415, 1417, 1418, 1428, 1429, 1430, 1436 or 1439.

Products Affected
iPod, iPod mini, iPod shuffle, iPod nano, iTunes 7 for Windows, iTunes 7 for Mac, iTunes 8 for Mac, iTunes 8 for Windows

Resolution
If you are experiencing these errors, begin by updating to the latest version of iTunes. When you have the current version of iTunes, try the following:

• Disconnect and reconnect your iPod and then attempt to restore.
• Restart your computer and then attempt to restore your iPod.
• Disable or Enable Disk Use on your iPod and then attempt to restore.
• Try connecting your iPod to a different USB port and then attempt to restore.
• Remove any third-party USB devices you have connected to your computer (it is not necessary to remove your keyboard or mouse).
• If you use Windows, re-register .dll files as described in article iTunes displays -50 error message when syncing iPod on Windows XP
• For Windows users, update or reinstall your Windows USB drivers.
  
  

Additional Information

Note: If you have an iPod shuffle you may need to use the iPod Reset Utility to restore the iPod. If you are not sure which iPod you have, see Apple Support document Identifying iPod models.