NOTE: During the installation process, the official Plex repository may be disabled.

• To enable the repository, open the plexmediaserver.list file and uncomment the line starting with deb:

  sudo nano /etc/apt/sources.list.d/plexmediaserver.list
   
  # When enabling this repo please remember to add the PlexPublic.Key into the apt setup.
  # wget -q https://downloads.plex.tv/plex-keys/PlexSign.key -O - | sudo apt-key add -
  deb https://downloads.plex.tv/repo/deb/ public main