How to upgrade the official version of the Apple developer system: first connect the device to iTunes; then force restart the device, and press and hold the "Sleep/Wake" button and the Home button at the same time; finally select "Update" to Just download and install the latest non-beta version of iOS.
About the iOS beta software
To use the iOS beta, you need to join the Apple Beta Software Program, Customer Seed Program, or iOS Developer Program. Here's what to do before and after installing an iOS beta on your iPhone, iPad, or iPod touch.
Archiving iOS Backups via iTunes
Before installing pre-release software, back up your device in iTunes, and then archive the backup. If you return to the current version of iOS, you won't be able to use iCloud backups or unarchived backups.
Please follow these steps to archive your backup:
1. Make sure you are using the latest version of iTunes. Connect your device to your computer and open iTunes. If you want to save health and activity data from your iOS device or Apple Watch, you'll need to encrypt your backup: Check the box called "Encrypt [device] backups" and set a password you can remember.
2. Write down the password and store it safely, because the iTunes backup will not be restored without this password.
3. If you do not need to save health and fitness record data, you can make an unencrypted backup. Just click "Back Up Now."
4. Wait for the backup to complete. Then go to iTunes > Preferences > Devices on your computer. Control-click the backup you just completed. Then choose Archive to save the backup. If you decide to return to the current version of iOS, you will need a backup of this archive.
5. Now, you can install the iOS beta version.
Download the final version of iOS
If you have an iOS beta installed but want to download the final version, please follow these steps:
Connect your device to iTunes. With the device connected, force restart the device. Press and hold the Sleep/Wake button and the Home button simultaneously. Don't release the buttons when you see the Apple logo. Keep pressing until you see the recovery mode screen. When prompted, choose Update to download and install the latest non-beta version of iOS.
Installing updates will not affect your content or settings.
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