Updating ipod touch software
i OS is obviously going in the direction of not needing i Tunes at all, but in the meantime you still need to sync an i Phone, i Pad, or i Pod touch to copy over music libraries, videos, media, perform local backups, apps, and more.
Solution 02: Another solution would reseting your i OS device to it’s factory settings Step 01: Check if your OSX & i Tunes is up to date using software update. Step 02: Connect your i OS device to i Tunes through your computer USB cable.
First time I thought this is because slow Wi Fi but no avail after deleting old network & adding same network again doesn’t fixed my problem.
So I called up Apple Online Support Toll Free number what they said that this was happening because I installed new operating system via Wi Fi it may cause errors because of Wi Fi network loss or network interruptions.
Step 01: Connect your device to your computer and open i Tunes.
Step 02: Press and hold both the Sleep / Wake and Home button for at least 10 seconds, and don’t release until you see the Apple logo.
Updating to i OS 11 is great, however, you may meet some problems after installing it on your device even though you have made full preparation.