A new software update for the Amazon Fire TV just started rolling out to devices a few hours ago. This latest update carries version number 22.214.171.124_user_513011520. I have manually installed this version on one of my Fire TV’s and can confirm that all three versions of towelroot (v1, v2, and v3) CANNOT ROOT the Fire TV running this latest software version.
As of now, if you have a rooted Fire TV and you want to keep root, you should keep your update blocks in place and not update to this latest version. This latest update is being served from the same domain as previous updates, so all current methods to block updates should block this latest version. The newest rootable Fire TV software update is still version 126.96.36.199_user_511070220. For new Fire TV’s you want to root, be sure to follow my guide on setting up a new Fire TV in order to avoid this latest unrootable update.
I’ll have a post up tomorrow detailing all the changes this new update brings to the Fire TV.
You can find my overview of Software Update 188.8.131.52_user_513011520 here.