Before installing CDM+ 11.0
Backup your data
Back up all databases that will be updated to CDM+ 11.0. If you're on Data Hosting you can contact support to make a backup or simply rely on the nightly backup.
Download and install CDM+ using the links above. This will remove previous versions of CDM+ from your computer. Open CDM+ 11.0 and update your database, then begin using CDM+ normally.