You can easily install the necessary updates and even upgrade your control panel to the latest available release using the Updater function within your control panel.
To update your Plesk control panel:
The control panel connects to the SWsoft's official Plesk Update server at URL http://autoinstall.plesk.com, retrieves information on the available releases, then analyses the components installed in the system and displays the lists of available releases and component updates. For each release a brief description of available operations is displayed.
You can also install all necessary updates by using external Plesk Auto Updater utility.
To upgrade your Plesk control panel via Plesk Auto Updater:
Your selected updates will be first downloaded and then installed. Follow the instructions of the Installation Wizard that will guide you through the installation process.
Depending on the importance of installed updates, Plesk might prompt you to restart your server. It is highly recommended to restart the server, otherwise your control panel might not work properly.
Notes on updating procedures:
When upgrading to a new control panel version, you will be notified by e-mail of upgrade procedure start and end. The notification message will include the event log and a list of installed components, if upgrade is successful. However, you may not receive any error notice if your mail server fails. In this case you can check for errors in the autoinstaller.log file located on the server hard drive.
All control panel operations are suspended during the installation of control panel components that affect the control panel's core functionality.