If you can’t update wirelessly, or if you want to update with iTunes, follow these steps:
- If you use your device’s Personal Hotspot for your computer’s Internet connection, update your device wirelessly or connect your computer to another network.
- Install the latest version of iTunes on your computer.
- Plug in your device to your computer.
- In iTunes, select your device.
- In the Summary pane, click Check for Update.
- Click Download and Update.