Unlike FireTV Partial Bootloader Unlock, this is a full bootloader unlock. fastboot flash and fastboot boot will both work. Of course you need an A to A USB cable to take advantage of it.
This is a tool to run on your Fire TV that will unlock the bootloader and then reboot. For now, this requires root. Apparently, the IDs that are required for this can be gotten through fastboot, so if someone can figure that out, then brand new Fire TVs with 188.8.131.52 or older can be unlocked and have recovery installed before booting the first time. Please refer to the linked thread below for more information.
As usual, this WILL void your warranty and I am NOT responsible for anything you do with this. Using this tool won't brick your Fire TV, but doing stupid things afterwards might.
This was all code I had written for recovery before the partial unlock, just tweaked to be used in this situation. Thanks to http://forum.xda-developers.com/kind...tware-t3030281 for showing what needed to be encrypted.
I have also published the full source at: https://github.com/androidrbox/aftv-full-unlock
- Downgrade: You must first downgrade to 184.108.40.206. If you already have CWM installed, you can skip this.
- adb push aftv-full-unlock /data/local/tmp/
- adb shell
- chmod 755 /data/local/tmp/aftv-full-unlock
If after it reboots and you run 'adb shell' and you get a root prompt, it has worked.
* Feb 16, 2015: The binary has been updated. The old version was unable to unlock certain Fire TVs. If you've already unlocked, you are fine. If it failed, this one should work.
You can download it here