Upgrade via uninstall / reinstall if you want full control over your upgrade and log files.
Upgrade via setup file. This type of upgrade implicitly removes the previous Tricentis Tosca version.
Upgrade via command line. Tricentis recommends that you use this option if you want to upgrade multiple clients at once.
Perform your migrations.
Tosca Commander stores its project data in repositories. If the data structure, i.e. the schema version, changes, you need to migrate these repositories. You also need to migrate XEngines to upgrade your XModules and linked TestCases.