How do I switch over from the old CES system to the new Discs? Alyson May 04, 2020 04:59 Updated Great! No need to upgrade anything. You can just visit www.NuCalm.com/store and buy the Discs. The Discs will replace both the cream and the CES. Related articles How do I upgrade my older CES and cream system to the app? Can the disc be reused? How do I repair my malfunctioning CES device? Are there any side effects of NuCalm? Can I listen to my own music or another app?