After installing the beta version of iOS 12, you may wish you did not. The good news is that you can go back to iOS 11 with a little work. The bad news is that you are likely to lose data.
What you need
You need access to a computer with the latest version of iTunes and a Lightning cable, and about an hour of your time (depending on the speed of your Internet connection).
If you have created an encrypted iTunes backup Before you upgrade to iOS 1
If you did not create an iTunes backup of your device before installing iOS 12, chances are I need to restore your iPhone as a new device. iCloud backups are not backwards-compatible, so you can not downgrade to iOS 11 and use iCloud backup created with iOS 12 to restore your apps, messages, and photos.
The Recovery Process
Connect your iOS device to a computer with iTunes open. Once you have authorized the computer to recognize your iOS device, place the device in recovery mode. During this process, press and hold a few buttons until the device restarts. However, you will not be able to let go until you see an iTunes logo on the device's display. Here are the keyboard shortcuts you need to know:
- iPhone 6S and earlier, iPad, iPod touch: Press and hold the Home button and the Sleep / Wake button
- iPhone 7 and iPhone 7 Plus: Hold press the button Sleep / wake button and volume down button
- iPhone X, iPhone 8, iPhone 8 Plus: Press the volume up button and then the volume button, then press and hold the sleep / wake button , Once the iTunes logo appears on the device's screen, an iTunes pop-up on the computer informs you that a device was found in recovery mode and asks if you want to restore or update the device. Select Restore to start the download
If the download takes too long and your iOS device restarts itself to exit the recovery mode, repeat the above steps and select Restore again. If you backed up iTunes, select it in the Backups list to complete the restore process. If this is not the case, select the setup device as new.