Have a quick read of this Coreelec does not boot in X96 mini there were some supposedly x96 minis with a rockchip that wont work. I set one up for my brother that needed a different dtb.img file I will see i can find the post try the one for the x96 that might be the one. I have set up around 10 of x96/x96 minis and find then reasonably good for the money. Some have them have been running for two years the main problem I find is the SD cards get corrupt so now I normal install to internal.