Simple rule: if you're not sure, always use a device tree with an update. I thought it's pretty clear when this is in bold+red in the instruction?
Ok-
so just to doublecheck.
I am uploading:
gxl_p212_2g_nand.dtb
+
LibreELEC-S905.arm-8.2-8.1.6.img.gz
to the Update folder on the NAND - correct?
(using a NEXBOX S905X with currently 8.0.* @ NAND installed)