Upgrade from the Plesk GUI (Plesk 10 and later)
Starting from Plesk 10, you can apply upgrades directly from Plesk in Tools & Settings > Updates and Upgrades.
We recommend that you set up Plesk to notify you when upgrades to the chosen version (early adopter, general, or late adopter release) become available. After you select the desired release tier in Tools & Settings > Update and Upgrade Settings, Plesk will check for upgrades once a day. When an upgrade with the selected release tier becomes available, Plesk will notify you on the Home > System Overview.