Unknown device - I'm lost!

If you are also using the 2.2.0 version of the zwave binding, then you will need to upgrade at least the binding. :wink: The dev binding also resolves the issue that in your log. If you are upgrading OH to a 2.3.0 snapshot, you may want to grab something older than 1230, since there could be some issues.

Please use code fences.