Default: automatic updates
By default, Homey updates automatically. Homey downloads updates when they become available, and installs them in a reboot, at a time that you usually do not use your Homey (like at night).
Manual updates (not recommended)
Within Homey's Settings → Updates screen, you can choose to not automatically download and install these updates. This is strongly discouraged by us, as you might up with a Homey that is less safe or compatible. Only uncheck automatic updates when you know what you are doing, and understand the risks.