If you're looking to access the beta firmware for your Smart Lock, you'll need to register your device ID through the Nuki Smart Lock Beta Program.
To find the device ID, please open the Nuki app and tap on the desired Smart Lock. Then open the device settings and navigate to the "Features & Configuration" section. Select the sub-menu "General" to locate the ID of your Smart Lock.
By joining the beta program, you'll be able to access the latest features and improvements before they're released to the general public.