Hello @KuchKuch, as you can read here in the /e/ forum, I’ve posted several times due to my Samsung experience that a downgrade from stockROM Android 10 to Android 9 is possible under certain conditions, and from there to /e/ OS ROM 8.1.0 Oero. The example above shows it clearly.
Well, now go to GrapheneOS (GOS). This is certainly not a bad decision, but GOS is not /e/OS. I myself test and use → GrapheneOS to better understand the philosophy of this project with a Pixel 3a. I couldn’t let it go though, and put a /e/ feeling on GrapheneOS at the home screen with /e/ BlissLauncher, /e/ Wallpaper, /e/ Apps, /e/ Browser as second webbrowser. See you next time.