Here’s how to update Plex on a server running Ubuntu.

• Find the URL for the latest Plex Media Server package here.
• SSH into your server. For the following steps, make sure you replace the URLs and packages with the latest release.
• Run the following command to download the latest package.

wget https://downloads.plex.tv/plex-media-server/0.9.12.4.1192-9a47d21/plexmediaserver_0.9.12.4.1192-9a47d21_amd64.deb

• Install the package with this command.

sudo dpkg -i plexmediaserver_0.9.12.4.1192–9a47d21_amd64.deb

• Following installation, remove the installer file with this command.

rm plexmediaserver_0.9.12.4.1192–9a47d21_amd64.deb