For the RockPi4C you just need the default armbian buster legacy. https://redirect.armbian.com/region/EU/rockpi-4b/Buster_legacy_xfce from https://www.armbian.com/rock-pi-4/ To install kodi with addones :   sudo apt install media-buster-legacy-rk3399 --install-recommends https://forum.armbian.com/topic/16516-rk3399-legacy-multimedia-framework/