Other Configuration Manager-related features and issues
There is no way to upgrade one version of ConfigMgr current branch to a newer version without using the built-in servicing model which is always initiated form the console. Full details at https://learn.microsoft.com/en-us/mem/configmgr/core/servers/manage/updates
If your site is offline, then you can use the Service Connection Tool to download the updates, but they are still install using the console. See https://learn.microsoft.com/en-us/mem/configmgr/core/servers/manage/use-the-service-connection-tool
What's the scenario here where you'd like another method or this method does not work for you?