Does anyone know how? I withdrew my invite to the beta and followed the steps in smart switch but I don't have the option to downgrade.
Check the bottom of the post about removing beta:
I also have some real issues on Android 10 Beta. I'm surprised actually, seems more like an Alpha to me. Camera crashes. Issues with internet browwsing. Emulators are running very slow and Vulkan is totally jacked up. Why did Samsung release this so far from finished? Of course I did not back up my 9 with Samsung Switch so now I'm hosed.