To get the beta over-the-air:
- Enable Beta Updates (Settings > General > Software Updates > Beta Updates)
- Make sure you’re signed into the right Apple Account
- Select which beta you’d like to receive (public/developer beta)
- Hit "Back" and pull down to refresh
- Back up to a computer or to iCloud
- Install the beta
If you no longer wish to receive beta updates:
- Turn off the Beta Updates (you can also sign out of your Apple Account to reset this setting)
- Wait for the next public release or follow the guide below to go back to a release build
Troubleshooting: If the beta doesn’t show up on your phone, try turning on airplane mode, then turning it back off, or restart your device.
How to install using a Mac?
- You’ll need the Xcode beta itself or a MobileDevice.pkg somebody extracted from the beta (click with two fingers or control-click), then choose Show Package Contents. Go to Contents/Resources/Packages. - this will work on older Macs that do not support the latest macOS or Xcode betas)
- Back up to your Mac or to iCloud in case you need to go back to another version
- Hold down Option, then click on ‘Check for Update’/‘Restore iPhone...’ and select the IPSW file you downloaded from the Apple Developer site. Note: You must be connected to the internet to complete the restore.
- Enter your iPhone passcode if you’re prompted to do so.
Notes/Tips:
- Always keep a backup in case you need to restore your phone
- Restoring wipes your settings and all data on your iPhone
- You only need to reinstall MobileDevice.pkg if your Mac stops recognizing your iPhone
- There is no MobileDevice.pkg equivalent to iTunes for PC which would require a new iTunes to support new/beta iOS
- Upgrading to a newer iPhone? You can update using your Mac before setting up the phone