Although Synology provide a quick install package of Plex Media Server, it doesn’t supply the latest version or automatic updates. Fortunately, Plex provide a ‘Plex Server for Synology’ package that can be installed manually.
For a manual install it’s first necessary to adjust the Package Center Trust Level. This is done through ‘Settings’ in the Package Center.
Adjust the Trust Level
The default Trust Level setting is to only trust packages from Synology Inc.
This should be changed to Trust Level Synology Inc and trusted publishers to allow installation of the Plex key and package.
Download and Install Signing Key and Package
- From the Synology Control Panel, check your processor type (Intel or ARM)
- Select and download the package for the correct processor type
- Download the Plex package signing key
With the key downloaded navigate to the certificate settings where we can add and remove keys on the Synology device.
Click ‘Import’ and add the PlexSign.key that you just downloaded by using the browse option in the import window.
Once added, you will see that a second key named Plex is listed.
In some instances it’s necessary to reboot the NAS drive before installing the Plex package (otherwise you may get a ‘port undefined’ error).
The Plex Media Server can now be installed by clicking on ‘Manual Install’ in the Package Center and selecting the package that you downloaded.
Click on ‘Apply’ and the install should complete.