Synology NAS DS718+ Which Plex package to install

The Synology Package Center only hosts the 32-bit version of PMS, which will not run on the DS718+.

You must use the x64 version downloaded directly from Plex.

As you are not using the version from the Synology Package Center, it will not know when an update is available.

To know when an update is available, you have two options:

  1. Go to PMS Settings → General in Plex Web or Plex Media Player.
  2. Subscribe to (Watch) the PMS announcement thread. You will be notified when a new version is available. To subscribe to the thread, scroll to the bottom and change the status from ‘Normal’ to ‘Watch.’

For additional info, see Q1 - Q3 in the Synology FAQ.