Updating firmware on ipod
If you need more space for a wireless update, you can update using i Tunes or delete content manually from your device.
Whether you use i Tunes or update wirelessly, you'll have the same amount of free space on your device after you update.
Run through the simple setup, and you’ll be presented with your device that is freshly updated to i OS 9. After it's been restored, then you can update the operating system.If you see an error message while trying to update your device wirelessly, learn what to do.Do note this firmware based method is intended for advanced users.The average i Phone, i Pad, or i Pod touch owner should install the i OS 9 software update through the Settings app in i OS, or through i Tunes as usual.