I followed the [corrected[ six steps of instructions. It failed to boot
at step #3 with the "SCRIPT FAILED" error and attempting to use TFTP. I
downloaded the original image again and repeated the instructions with
the same failure at step #3.
I attempted the test with both the image from:
I had a non-conforming result:
I imaged an microSD card with ubuntu-16.04-preinstalled-server-
armhf+raspi3.img
I tested three methods of editing the config.txt file to apply the above
mentioned changes related to `device_tree_address=0x02008000`
Test #1: edited the file before first boot.
