You Can't Downgrade from iOS 10.3.3
If you download the iOS 10.3.3 update on your iPad you're stuck until Apple rolls out its next official iOS update.
Apple's stopped signing off on iOS 10.3.1 which means you can no longer downgrade to iOS 10.3.2 if you're unsatisfied with iOS 10.3.3's performance. You can move to iOS 11 beta but it's plagued with bugs and problems.
Unfortunately, the company isn't signing off on anything older than iOS 10.3.2 either which means there's no going back to iOS 10.3 or iOS 9.
For more on the downgrade process, take a look at our walkthrough.