The short answer is:
First boot takes 2–5 minutes. Once at the screen, set up iOS 6 as a new iPod (do not restore from backup). downgrade ipod touch 5 to ios 6
If you want to reclaim storage:
The short answer is:
First boot takes 2–5 minutes. Once at the screen, set up iOS 6 as a new iPod (do not restore from backup).
If you want to reclaim storage: