If you have had 4.5.3 on your Fire HD, you can skip this step. If you did not need to downgrade it, you have to block OTAs on your Kindle Fire HD. Turn off your Wi-Fi on your Kindle Fire HD and enable USB debugging and then connect your device to your computer and open a command prompt window.
Unlock and Root of Kindle HDX 3rd Gen with F… | Amazon Apr 14, 2019 Is jailbreaking the Fire 10 HD worth it? : kindlefire I had a Kindle Fire HDX for many years, but a lot of the apps were no longer able to run on it because it didn't support the updates. Even the Amazon Shop app was no longer running, and I had to go to Amazon on the internet browser just to buy Kindle books. So, I bit the bullet and decided to upgrade to the Fire HD 8 … How to turn Kindle Fire into Android tablet without Rooting Nov 21, 2018
How to Root the Amazon Kindle Fire - Android Authority
Mar 19, 2014
Root the Kindle Fire HD in a Few Clicks
How to Root Your Amazon Kindle Fire HDX in Less Than 5