I tried to root my Techniviola ViolaPad 10G (tablet rk3188, Android 4.2.2). Not exactly a success. While root access is working, system settings are not e.g. switching to a different keyboard, sometimes when selecting an option it is not highlighted/checked/on, I do have to select it several times and then reboot the device.
Any advice how to fix this? I think I will check out the pc version for now and report back.