Unistalling Sugar-Project Theme
Log in to your SugarCRM system as Administrator
Go to Admin > Module Loader and select Sugar-Project modules and un-install
Go to Admin > Themes and deactivate Sugar-Project theme and activate others themes
How to update the new SuiteCRM releases
You can install the new SuiteCRM release and then upgrade Sugar-Project with a new version or reinstall Sugar-Project when your SuiteCRM upgrade has finished.