Dear Mohd , thank you for your support , my device is beelink GT1 ultimate , i got the DTB file from the corelec latest version , i confirmed it is the right one for my device , as i was running coreelc on it , then replaced the dtb file for both systems on SD card and on the recovery partition too , started the device it shows the mutli boot screen but i can only load android , if i tried to boot corelec , it doesnt complete the setup for the remote you are right i have no experience to do it but if you can share a link to learn me i will appreciate it
thx