How to downgrade iOS 15.7.1 after the official version is updated
The internal iOS system of Apple's mobile phone ranks first in the industry. While other mobile phones are still using Android based derivative systems, Apple has developed and launched its own iOS operating system long ago. Many old users are still using the official version of iOS 15.7.1, which was pushed by Apple before. How can I downgrade iOS 15.7.1 after the official version is updated? Now let's make an introduction!
How can I downgrade iOS 15.7.1 after the official version is updated? Introduction to the downgrade method after the upgrade of iOS 15.7.1 official version
1. After upgrading the official version of iOS, you cannot downgrade back to the official version of iOS that has been closed for verification.
2. Due to the limitation of the iOS system, during the downgrade operation, you cannot check "Save user data for refreshing" (you cannot directly save the data in the device for refreshing), otherwise problems may occur. All data in the device will be cleared after the downgrade.
3. After the high version is downgraded to the low version, the data of the high version cannot be fully recovered to the low version system directly. You can use the Aisi Assistant classified backup function to back up data (application data cannot be backed up), and restore to the device after the downgrade is successful.
4. Please make sure that the activation lock is not enabled on the mobile device, or you know the ID lock account and password, otherwise you may not be able to activate and use the device after the device is flushed.
The above is about how to downgrade the iOS 15.7.1 official version after the update. It is still troublesome to downgrade the iPhone. If the official channel is not available, you can only use third-party software, such as the Aisi assistant to refresh the iPhone.
