The sonic pad hasn’t had an update in 3 years.
A user @munecito posted this in the last couple weeks.
Their issue wasn’t the SonicPad so we never got into the process they used to flash Debian.
I do find this:
But I can’t offer any assurance it will work.
If you can get rid of the Creality OS we can help you get the V2.4.7 flashed to Klipper.