Amazon updated the Kindle Fire to version 6.2.1 in an effort to stop users from rooting the device but root access is back. This update to 6.2.1 took root access away from user along with blocking the ability to re-root the way it was done previously. Root access is again available for the Kindle Fire now on version 6.2.1.
Type “adb shell chown 0.0 /system/xbin/su”, press enter
Type “adb shell chmod 06755 /system/xbin/su”, press enter
Type “adb install com.noshufu.android.su-1.apk”, press enter
Type “adb reboot”, press enter
Congrats your Kindle Fire is now rooted running version 6.2.1 and below. If you run into any issues drop us a line and there is also more information at Rootzwiki. The people that get the credit for the above method are … Justin Case (case), Vashypooh, Trevor Eckhart, IOMoster , AndroidPolice.com, RootzWiki.com, and ChainsDD.
With the release of the Amazon Kindle Fire the first thing we look for is Root access and it has already been achieved. XDA member death2all110 has gained root access on the Kindle Fire using the SuperOneClick 2.2 method that is already available and used on many devices.
There are a few things that need to be done before actually one click rooting the Kindle Fire although its a pretty easy process. One thing you will need to understand is ADB and have it setup on the computer you are using to run SuperOneClick.
Instructions to Root the Kindle Fire:
Download and install the Android SDK on your Computer
Go to %USERPROFILE%\.android and edit the adb_usb.ini
Add “0×1949″ to the end of the adb_usb.ini file and save it
Go to where you installed the Android SDK and open the folder “google-usb_driver”
Edit the file android_winusb.inf adding the following to [Google.NTx86] and [Google.NTamd64]