How to solve the serious flashback of iOS 8.4

What should I do if the iPhone6 program flashes back? The reason for this is the following：

1. Check the App Store on iPhone6 to see if the software that can't be opened can't be opened because of the version update. In this case, just click on the application.

Just update the software version in the store.

2. Or if the software has flashback, you can use some software with Apple flashback repair function, such as Apple Assistant, iTools, xy Apple Assistant and other software with Apple flashback repair function to repair it.

3. It is also possible that the software cannot be opened due to the failure of the iPhone6 system. It is recommended to refresh and restore the system. Or the software is not compatible with the iPhone6 system, please update the system and software to a compatible version.

4. in addition. If the software cannot be opened, you can also delete the software and try again.

5. Downloading from platforms other than Apple's third party is not caused by Apple's genuine software. It is recommended to download and install genuine software directly in the iPhone6 mobile app store.