Restart Iphone 11 Pro Max. Quickly press and release the volume up button 1. Launch itunes on your mac or pc.
Install itunes to your computer. Press and release the volume up button. Step 1 how to force restart an iphone 11 pro max.
Plug your iphone in a computer.
Plug your iphone in a computer. Then repeat the same step with the volume down button. Press and release the volume down button. Download itunes latest version from apple official website to your computer.