Some Amazon Fire TVs are starting to ship with an updated recovery partition that is blocking downgrades. The ability to downgrade is important, as it is currently a necessary step to installing ClockworkMod Custom Recovery. These latest Fire TVs are arriving with software version 18.104.22.168 installed. The good news is, since these Fire TVs are arriving with a rootable software version, it is simple enough to replace the new downgrade-blocking recovery partition with the older one that allows downgrades. I have updated my downgrading guide with full instructions to do just that incase you find yourself with a Fire TV that fails to downgrade. Unfortunately, this means that this is likely the final batch of rootable Fire TVs to ship from Amazon, as the next batch will surely ship with an unrootable software version. If you’ve been thinking about picking up a new Fire TV to root, you better act fast and get one of the last rootable Fire TVs while they last!