How to root your DJI CrystalSky / Phantom GL300E monitor and gain SuperUser / SU access with some easy hacks - #11 by Schenkelspalter - Modifications - Grey Arrows Drone Club UK
Gl300E Firmware 1.3.6.0 | DJI FORUM
How to install 3rd party app - DJI Phantom 4 Pro Plus RC (GL300E) | This video to show you how to use this ADB run the command and install the 3rd