Tutorial: Root Shield Android TV (2017; 16GB)

This tutorial – especially Step 3 – has changed considerably. Please work through it carefully and report any issues to me immediately so I can help others.

We are rooting the Shield Android TV (2017; 16GB SKU) running Android 8.0 (aka Oreo) on v7.2.2. Note: This uses a special patched bootloader and will not work in future updates. You’ll need to apply FULL OTA upgrades to restore the bootloader, then repeat this tutorial with the proper version bootloader.  Looking for the Shield TV (2015; 16GB SKU) tutorial?  Click here.  Looking for the 500GB SKU tutorial?  Click here.