Together we proudly present kamakiri for the FireTV Stick 4K.
Before proceeding make sure to read and understand this entire post.
Running this exploit requires a patched linux-kernel on the PC you are using.
We have put together a Live-ISO that already contains all prerequisites required for running kamakiri.
You can find the current version of the ISO at:
It can be burned to a CD or to a USB-flashdrive.
Current Version: kamakiri-mantis-v1.0.zip
You will need to open the device and remove the heatshield on the side without the antennas (2 square bricks).
NOTE:It is not required to desolder or force the shield off, it is just clipped onto a frame. (The attached picture may be a bit misleading, since it also has the frame removed)
You will need something for shorting (wire, aluminum foil etc.)
- Boot the ISO
- Download and extract the exploit package.
- Open a terminal in the kamakiri directory
- Short one of the points in the attached photo to ground (the cage of the shielding).
Ideally you want to use DAT0, since that is tiny it might be easier to short the point marked CLK instead.
It is very important that you use a piece of soft wire or aluminum foil or something similar for shorting. Don't use tweezers as that makes it incredibly easy to knock of the capacitor off the PCB and kill the board!
- Connect the stick to your computer (while keeping it shorted)
- The script should tell you to release the short and hit enter
- Once finished run
- Your device will now reboot into TWRP
Don't flash boot/recovery images from FireOS (FlashFire, MagiskManager etc.)
TWRP will prevent updates from overwriting LK/Preloader/TZ, so generally installing an update should work without issues (only full updates, incremental updates won't work).
For ROM developers there is still an option to overwrite these, which should only be done after thorough testing and if needed (LK should never be updated).
It is still advised to disable OTA.
thanks to @hwmod for the picture
thanks to @Sus_i for providing an update.bin
thanks to @zeroepoch for developing aftv2-tools
kamakiri, Tool/Utility for the Amazon Fire TV
Source Code: https://github.com/amonet-kamakiri/
Current Stable Version: 1.0.0
Stable Release Date: 2019-10-05
Last Updated 2019-10-14