If I follow all of the steps to install the firmware, as well as the 4 settings to change to remove the overlays and disable auto-off, this works until I power-off the camera.
Upon power-on, the settings are still set correctly but the display shuts off after 1 minute. Changing the "Disable LCD Off" setting to something, then changing it back to "Always" will address the issue until the next time I power off the camera.
Thanks, that means the trial builds work just like the official builds, the experiment was unsuccessful.
I'll probably post builds with some debug data on screen, sometime later.