Installation
StreamDeck plugin installation is described in this article.

Updating the StreamDeck plugin

In order to update the StreamDeck plugin the old one needs to be uninstalled first. Here’s how:
Open StreamDeck app and click “More actions”:
In the new window find Nobe OmniScope on the list and click Uninstall…
Now you can install the new version of the plugin by just double clicking the installation file.