Returning a controller to near factory defaults

Prerequisites:

The controller is the Niagara 4 unit.
You have backed up any station files as well as any other files needed later, for example digital certificate keys. Always export certificate keys for any TLS-configured unit (and store the exported keys in a safe place), such that if the controller needed to be replaced (hardware swap-out), you could re-import those keys.

Using Workbench, open a platform connection to the controller.
To access the  !cleanDist directory, open the Distribution File Installer and click the Cleaning button.
Each clean dist file has the suffix -clean in its name. Clean distribution files are located in your Sys Home !cleanDist folder—apart from other dist files under your software database.
Clean dist files appear listed with a WARNING in the Description. You can select only the appropriate file for the currently opened platform.
Select the appropriate clean dist file for the platform and click Install.
Removing a file system takes a few minutes, then the controller automatically reboots. Wait for the reboot to complete.
NOTE: After reboot from a clean dist install, the controller requires port (3011).
Do one of the following:
- To re-install the software versions to the controller, open a version of Workbench that uses the same software version that you want on the controller, and use the platform Commissioning Wizard to install the desired software build.
- If you have a backup dist file for the controller that was made when it had the desired prior N4 software version, use the Distribution File Installer to install it.