Three different source have reported that their Fire TV has received a new firmware update. All three sources have said that the update removed root access and they were unable to root their Fire TV after installing the update. To me, this confirms that Amazon has blocked the current towelroot rooting method with this new firmware version. One reader says the new firmware version is 18.104.22.168_user_512073320. I don’t know what changes this new firmware brings yet, but at this time you should keep your update blocks in place if you want to keep root access.