Information in this topic is very outdated see this topic.
The start system in Coreelec is not compatible with LibreELECE Armbian etc. If you run coreelec on your TV box, you will no longer be able to run LE and Armbian normally until the full recovery of the standard firmware via the USB Burn Tool and the new activation of the universal multi-boot, which is used in all new systems.
The new version 5.55 of images. In this versi
Now checked on Odroid C2 an image 5.76 with MALI and a media script, by a technique with replacement of u-boot, as for K2.
Everything works fine. After installing the script, the standard browser began to play video 1080 full screen without brakes. MPV is just as easy to handle any full-screen video. Bonus has an in-house sound via HDMI. There is one caveat when configuring - it is necessary to specify the correct DTB option in the file for Odroid C2 "/extlinux/extlinux conf".