How do I switch over from the old CES system to the new Discs? Alyson September 11, 2020 17:14 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? How do I repair my malfunctioning CES device? Are there any side effects of NuCalm? Can the disc be reused? How do I use NuCalm to improve my nighttime sleep?