deactivation and update

Hello!

I want to try to update to the latest version SP4, because I have still problems of slowness of the commands

As you can see in this post:

https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/#community:51/iquestion:4ngvAoLTTAO3jKi4E6bDng

but I didn't understand if the license deactivation and the uninstallation of the old version must be done before the new installation

thanks a lot

Paolo