R76S will be supported, but its too early at this stage. We setup download page https://www.armbian.com/nanopi-r76s/ but no images yet.

Thank you for the advice @MattWestB, But I already tried all available LED-config options, booting fine, but none working

Oh right, I forgot about that. Luckily the rk3576 is already maturing in the Linux kernel. In that case we will just hope for the best. Thank you for your time. edit: Could this topic be moved to https://forum.armbian.com/forum/176-other-families/

Try different LED-config then its also changing the hardware for the SD-Card interfaces = WiFi module but prepare that it can ending with not booteball system.

Probably marking on the board is the only what really matters.