Backup Zooz 800

6

You can switch over to Z-WaveJS UI. It does backups of the Z-Wave controller’s NVM. Not sure if supports backing up the NVM on 800 series yet.

But you get lots of other features… I am going to do it this weekend but I have a 700 series.

Switching Z-Wave JS Addons with Minimal Downtime! Z-Wave JS (Official) to Z-Wave JS UI (Community) - Community Guides - Home Assistant Community (home-assistant.io)

Or you can wait and maybe those features will get implemented in the official add-on.