How to update your iPad:
1. Tap on "Updates" on the bottom part of the iPad.
2. Now that you are on the "Updates" screen, tap on "Content Sync" on the left (it may be selected already).
3. On the right side you will see a blue yes button, tap on the blue yes button.
Note: Please turn off your cellular, you will need to be connected to a strong reliable wifi in order to do this.