To assist our customers in this regard, we provide a clear lifecycle and end-of-life (EOL) policy to assist in planning decisions around using and upgrading both Plesk and the environment in which it is running.As a general rule, Plesk will support any new, major version for four years.Before installing or upgrading Parallels products, be sure to back up your data. To start the installation or upgrade, press N and then press Enter. You may be logged out of Plesk due to inactivity while the upgrade is running and the upgrade may appear to have stopped.In this case, close the window and follow steps 1-3 to return to the update page.
The last section of the tutorial is a list of the most commonly used commands for the command line method.
This article applies to Plesk versions 10.x and 11.x.
Always take extra caution before upgrading Plesk Panel to a new version.
We recommend checking the official Plesk Release notes on the Parallels website before proceeding with a major version upgrade of Plesk.
Plesk graphical updater uses port 8447 and it should be both opened on your server and shared/managed firewall.