Procedures are described in detail by kszaq on the first page. You cant go wrong.
Let me help you out; just find the proper .dtb file from the location mentioned on the first page. Grab the proper one for your box (make sure memory and ethernet values match) and replace the file on your SDCard after burning the image. Boot. Done.
PS: Note that if you have a s905X box,or are using a existing device tree that works , replacing the device tree might not be needed. Just leave it.
Thank you for your reply. I have read the instructions that kszaq has posted. I forgot to mention that i own a KIII S905 and that i have installed LE in NAND. I am no longer booting via SD card and this is why i am asking. My ultimate goal is to have my ir remote operational again, ad my current airmouse (a non name chinese one) is not working properly.