Using recovery mode
If you're having problems updating or restoring your device, you can enable recovery mode to restore or update with the assistance of your computer.
1.
With iPhone connected to a computer, simultaneously press and hold the Top button and the Home button until the Connect to iTunes screen appears.
For this tutorial, we're showing how to update iPhone using recovery mode. iTunes will try to reinstall iOS without deleting your data. You can choose to restore iPhone instead, but steps may vary based on what you choose.
2.
On your computer, click Update.
After the update completes, follow the onscreen prompts to set up iPhone.
3.
You've completed the steps!
