Depending on how you look at it, it has either been a great or really bad couple of weeks for Amazon devices with MediaTek processors. First, the Fire HD 8 tablet was rooted and then the Fire 7 tablet was rooted. Just a few days ago, the Fire TV Stick 2 was rooted for the first time and now the 2nd-generation Fire TV box is the latest device to fall. Surprisingly, the rooting method that has just been discovered for the Fire TV 2 is unrelated to the method used to root the other Amazon devices. This new method is actually much easier, as it does not require opening the device or shorting circuit board points, like the Fire TV Stick 2 and Fire tablet rooting methods. There’s also the potential for this new rooting method to work on other Fire TV devices with MediaTek processors, like the Fire TV Stick 4K, which has yet to be rooted, and even the Fire TV Stick 2, to serve as a simpler rooting method than the one that already exists.
XDA forum user diplomatic recently discovered an exploit with MediaTek processors that temporarily achieves root access. Other XDA users have been slowly testing the method on various devices and figuring out how to convert the temporary root to a full root that sticks after the device is rebooted. XDA forum user el7145 was the first to verify that the exploit worked to temporarily root the Fire TV 2. Well known Fire TV rooter and ROM creator rbox quickly chimed in with an updated version of his TWRP custom recovery for the Fire TV 2 that he created back in 2016 when the Fire TV 2 was first rooted. User el7145 has verified that it worked and allowed him to flash rbox’s latest pre-rooted ROM.
There isn’t a single guide to follow for this rooting method, yet, because it was achieved by piecing together parts of multiple guides. Essentially, the process to root the Fire TV 2 is to follow these instructions to achieve temporary root. Then follow these instructions but using this file to install TWRP custom recovery. Lastly, follow these insturctions to flash the latest pre-rooted ROM.
I have not attempted this rooting method and it seems like only one person has done it successfully so far, so proceed with caution if you plan to root your Fire TV 2. This rooting method does not and will never work on the Fire TV 1. If you’re unsure which model you have, the easiest way to figure it out is to install my new Informer app from the Amazon appstore.