When you first boot up the ODROID-XU4 with Linux, it will be turned off automatically for system con-figuration. You need to turn it on again by pressing the power button or unplug and plug the power cable. The OS uses about 5GB of storage space, so keep this in mind when selecting an OS storage capacity.
System default login: Username : odroid Password : odroid
Open a terminal and type the below commands:
sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
sudo apt install linux-image-xu3