I am not sure how to update my external sybase database. We are running 2017 currently and want to update to 2017 U4. The instructions say to mount the iso and run setup but there is no iso in the downloads for 2017 U4. The readme says the update process will automatically stop the services on all but the master or dedicated primary server. So my best guess is that the updater runs the database update and I don't have to do anything directly on the external sybase server. Is that correct?