Thank you very much for your reply avin; it’s certainly relevant because the S905X3 appears in the BuzzTV XRS4500+, on which it’s possible to put CoreELEC (as described/linked to in this thread), as well as on both the Banana Pi M5 and Hardkernel Odroid C4, which CoreELEC supports and have mutliple Debian- and Arch-based images available for them.
So, I know it was ~three years ago for you, but would you mind elaborating here on the steps you took to get Manjaro working on the X96 MP+ ? I’ll be honest, Manjaro wouldn’t be my first choice, but I imagine the process should be somewhat similar for vanilla Debian? I have managed to successfully follow the process for building vanilla Debian 11 to run on a Raspberry Pi 3B+ so I hope I’d be able to follow along.