If you see an error message while trying to update your device wirelessly, learn what to do.
If you need more space for a wireless update, you can update using i Tunes or delete content manually from your device.
However, there are 5 things you need to do before installing i OS 8 on your i Device, or you may fail to upgrade.
Restoring your i Pod erases all of its data and settings and returns it to the state it was in when you first got it.
After it's been restored, then you can update the operating system.
If that window doesn't appear, you can start an update manually by following the steps below.
New versions of i Tunes are almost always better than the last—but not every time and not for every user.
Search for updating ipod:
If you've upgraded i Tunes and don't like it, you may want to go back to the previous one.