Need help with dtb file for shield tablet marshmallow

I remember that when I had to flash my shield tablet that the instructions told me to also flash the dtb file. My questions is if that’s true, then where is the dtb flashable file for marshmallow? Or is the dtb flashable file in the KitKat recovery also usable for marshmallow? Either way where can I find the dtb file? It’s not in the 4.0.1 or 3.1.1 recovery files. Thanks for the help!!!