Обновлял по инструкции на вкладке Setup Info:
- Upgrading Plex Media Server Manually
This will normally only have to be done by Plex Pass members upgrading to the latest packages.
Command line: /etc/init.d/plexmediaserver stop
Command line: cd /var/cache/apt/archives
Command line: rm plex*.deb
Now move the new package to this location /var/cache/apt/archives. While in the archives directory the best method is to use "wget downloadlink" from Plex forums.
While on the post in the Plex forum where the package links are located right click on the 32 or 64 bit link. Then click on "Copy link address".
In a Putty root session to your OMV: cd /var/cache/apt/archives
Still in root session: wget(type a space after the wget then right click and paste the link. Hit ENTER and the package will download directly to this location.)
Now install the package while still in archives directory: dpkg -i plex(hit TAB and then ENTER)
After installation start PlexMediaServer: /etc/init.d/plexmediaserver start