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iPhone downgrade operation (downgrade operation: how to downgrade the system version of iPhone) With the continuous upgrading of the iOS system,Binance login the functions and performance of iPhone are also constantly improving. However, some users are not satisfied with the latest version of the iOS system. They may encounter some problems, such as performance degradation, program crashes, battery life reduction, etc. Therefore, they may want to reduce the iOS system version. This article will introduce how to downgrade on iPhone. One. First of all, before backing up the iPhone downgrade, you must back up the corresponding iPhone data to prevent data loss. 1. Use iCloudBackup - Enter "Settings" of iPhone - Click "iCloud" - Select "Backup" - Click "Backup Now" 2. Use iTunes Backup - Open iTunes - Connect iPhone to Computer - Select your iPhone in iTunes - Click "Backup iPhone" After the backup is completed, you can continue with the downgrade step. II. To download the old version of the iOS system image, you need to download the old version of the iOS system image before downloading the version. You can find the iOS version you want to downgrade on Apple's official website. The steps are as follows: 1. Open the browser and enter the Apple official website 2. Search for the iOS system version 3 you need to download.Choose your iPhone model 4. Download the corresponding iOS system image 5. Put the iOS system mirror image on the computer desktop for subsequent operations III. Use iTunes to downgrade. After completing the backup and downloading the old version of the iOS system image, you can start the downgrading operation. The steps are as follows: 1. Open iTunes 2. Connect the iPhone to the computer 3. Select your iPhone 4 in iTunes. Hold down the Option key (Mac users) or Shift key (Windows users) and click "Restore iPhone" 5. In the pop-up new window, select the previously downloaded iOS system image file 6.Click "Restore" 7. Wait for the iPhone downgrade to complete. After completion, your iPhone will automatically restart and install the downgraded iOS system. Four. Issues to pay attention to after downgrading After the iPhone downgrades to the iOS version, you need to pay attention to the following issues: 1. iPhone may become more unstable, so some settings may need to be reset. Two. Some data may be lost, but the backed up data can be restored in iTunes. 3. The application may have compatibility problems, but you can solve them by updating the application. Summarizing the downgrade of the iOS system version is very useful for users who want to improve iPhone performance problems.However, important data must be backed up before downgrading to prevent data loss. After downgrading, you also need to pay attention to some possible problems, such as unstable performance, data loss and application compatibility problems.

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