just an FYI to anyone who attempts this. Make sure to disable auto-update of apps in the Google Play store. The tablet cannot update apps once the 'device_provisioned" setting is changed to 0. You have to use Settings Database Editor again and change the value back to 1, update the apps, and then change the value to 0.
I’m currently running into an issue where I can no longer access Settings Database Editor on my Fire tablet, so I can’t revert my changes. The app seems to have disappeared from the main screen. Maybe it was removed after a system update? I can see the app when I open Google Play and go to ‘My Apps’ section, but there is no option to open the app, only Update or Uninstall. I think my options are to do a factory reset or try to sideload the app, but who knows what side effects will happen because of these settings changes. Beware!