Now, the bad news for some. The update breaks root and the latest tool used for quick and easy rooting of the tablet, BurritoRoot, does not work once the update is installed. Amazon has yet to pass along the documentation for the new firmware, but hopefully they will soon. If you want to manually install the firmware, you can download a binary file from XDA user b63. All you need to do is download the file, place it in your Fire's kindleupdates folder, and go to Settings > Device > Update your Kindle. That's all there is to it. The binary file can be found by visiting the sourcelink.