For major releases of SolidWorks, upgrading the license manager consists of uninstalling the old license manager, installing a new one, and re-activating the SolidNetWork license.
The license manager for a newer release can distribute licenses for client computers remaining at the previous release as well.
If you are upgrading the SolidNetWork License Manager on a computer that also runs the SolidWorks application, upgrade SolidNetWork license managers and clients before installing any new SolidWorks application service packs on that computer.
If you are upgrading the license manager on a computer that hosts administrative images, upgrade the license manager before upgrading the administrative images. For details, see Using the Same Computer for the License Manager and Administrative Image Installations.