How to switch to Win1 system in Win10 system

The so-called Win10 fast update mode refers to the prompt to get the updated version faster, so that the update is started earlier than others. So how does the Win10 system switch to the fast update mode?
Setting method:
1. Click the Start menu and click “Set">;

2, click “Update & Security"Options;

3. Select Windows Update, then click “Advanced Settings 

4, we find “select the preview installation method”, “slow” change to fast;

How to switch to the fast update mode of the Win10 system, but there is no fast update mode in the latest version of Win10.