The setting method is as follows: Open iPhone Settings-General-Software Update, and click the "Automatic Update" option below. In this interface, you can turn off the "download iOS update" and "install iOS update" options. After a successful shutdown, the iPhone will not automatically download the update package for update and installation.

What is a configuration profile? Configuration file? Is an XML file (in. Mobileconfig), which contains the payload that loads the settings and authorization information to the Apple device. It automatically configures settings, accounts, access restrictions and credentials. These files can be created by MDM solution or Apple Configurator 2, or they can be created manually (SYSIN).

Because configuration profiles can be encrypted and signed, you can restrict them to specific Apple devices and prevent anyone except the user name and password from changing their settings. You can also mark the configuration profile as locked to the device.