Upgrading Virto Workflow Automation
If you already use Virto Workflow Automation (formerly Virto SharePoint Workflow Activities Kit) and need to upgrade it to the latest version, download the package from the Virto Workflow Automation page. Unzip it and run the setup program as described in Installing Virto Workflow Automation Web Part. Virto Workflow Status Monitor and Virto Workflow Scheduler are part of Virto Workflow Automation and are upgraded with it.
On the step 3 you will see the window as follows:

Check the box “Upgrade” and click “Next”.
Note: if you had activated the license while installing the previous version, you do not need to activate it now.