Connect the HDMI cable to the Erle-Brain 2 HDMI port. After booting a GUI will be displayed.
Once the Erle-Brain 2 boots you will see a nice operating system. Once there, plug a mouse and a keyboard and select the drone. Erle-Brain 2 will configure itself automatically.
PX4 instructions are available here.
After choosing your vehicle, GUI is disabled.
If you need restart your system to default, type in your terminal
Type the following in Erle-Brain 2 to get root access: