I just purchased a Amazon 5th gen kindle fire to use as a ground station for my drones. The device supports OTG and has the power needed to run the 3dr usb telemetry device.
Out of the box the fire is kind of useless for anything but an e-reader amazon buying tool. Rooting and a ROM upgrade solves this! It is fairly simple, however the process is time consuming with lots of waiting (have something else to do like a book or a movie while you’re waiting on certain processes).
Step 1: Make sure you have 126.96.36.199 fire OS installed on device
Go to Settings -> Device Options -> Software Updates to check the version. My device shipped with 188.8.131.52 so I did not need to load a different firmware. Your mileage may vary.
If version is less than 184.108.40.206 follow This Guide instead.
DO NOT attempt to downgrade a > 220.127.116.11 device below 18.104.22.168!!! This it will BRICK your fire.
Once version is 22.214.171.124 go to step 2
Step 2: Reset to factory settings
Go to Settings -> Factory Reset and perform a factory reset. This will reboot the device.
When device boots skip all set up and do not connect to WiFi yet (this will slow down any unwanted update process).
Step 3: Enable Developer Mode
Go to Settings -> Device Options and tap the build number seven times to enable dev mode.
Go to Settings -> Device Options -> Developer and turn on USB debugging and ADB.
Step 4: Download needed files
Download the latest SuperTool from RootJunky and extract somewhere you will remember.
Download the latest Nexus ROM for Fire Tablet but DO NOT extract it.
Step 5: Run SuperTool
From a command line navigate to the SuperTool folder and run the appropriate file. In Linux the command is
You will see a screen like this:
Press 2 and Enter to root device. First it will install KingRoot to your device which you will then have to run from your device when directed to do so. KingRoot will ask you to connect to WiFi.
You will likely have to run KingRoot repeatedly before it will work. Time to grab a book or a movie as this part takes time. Each time you run KingRoot it will reboot your device a few times and show progress on the screen. Each attempt takes about 10-15 minutes or more. After the first attempt I unplugged my device from the computer and had to run KingRoot a total of 4 times before it worked. Just keep trying.
Once root is gained plug your Fire back into the computer (you may need to cycle the ADB setting on your device for it to be recognized) and continue the SuperTool process following all instructions there. This will install SuperSu which will need interaction from you on the device. Follow the setup procedure according to the instructions in SuperTool.
Once this process is done run “Block OTA updates” to prevent accidentally losing root access.
Step 6: Install Rom via FlashFire
While still in SuperTool install FlashFire (option 6).
From your computer copy the zipped ROM file downloaded in Step 4 over to the INTERNAL storage of your Fire device.
On your device run FlashFire and follow these steps exactly, otherwise you risk the installation having problems:
Select the red plus (+) button to expand a selection of options, choosing Wipe.
Select System data, 3rd party apps, and Dalvik cache if they are not already checked.
Click the red plus (+) button again and choose Flash ZIP/OTA.
Search for the Nexus ROM that you’ve copied over and choose it.
Automount and Mount /system read/write need to be unchecked.
Drag Wipe to the top of the queue.
Hit the flash button to start the process.
This will take a few minutes and the screen might go blank for a while. It will eventually boot into the new ROM.
Step 7: Enjoy!
With new ROM installed be sure to update Google first. After it updates clear google app and framework cache and reboot.
Install apps. You will need EVERYTHING as this is a very vanilla ROM.
OTG works great with APM/Tower or DroidPlanner software.
Much faster, full play store support and NO ADS! Yay!