What's wrong with iOS 15.7.3 update

When the official version of iOS 16.3 was released, iOS 15.7.3 was also quietly updated. This is a version update for older models. Although there are not many users updating iOS 15.7.3, there are still a certain number. Recently, users who updated iOS 15.7.3 reported that they failed to update when upgrading. What's the matter? Let's introduce it in detail.

What's wrong with iOS 15.7.3 update? What is the reason for the failure of iOS 15.7.3 update

I. Incorrect installation method

1. First of all, since the beta version is released this time, we need to download the description file to update it, and cannot install it directly in the system update.

2. Download the ios15 description file, and then enter Settings to install it in the description file.

II. The model does not support

Currently, the models supporting ios15 are: iPhone 7, iPhone 7 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (first generation), iPhone SE (second generation)

Third, the network connection is abnormal

After downloading the description file, the ios15 system ontology still needs to be downloaded online. Therefore, if the network connection is not normal, the installation may fail.

IV. Insufficient memory

We can delete unwanted applications and files in the storage space.

This is where Xiaobian will introduce the content about the error in iOS 15.7.3 update. You can try according to the method given by the editor and basically solve the problem of update failure. If these methods can't be solved, they can only be sent to the Apple official for maintenance.