[Kindle Fire HDX 7" & 8.9" General] GSLEON3:
Steps for WINDOWS...

1. Ensure you have the latest Java SDK installed. The JDK can be found here: http://www.oracle.com/technetwork/ja...s-1880260.html

Make certain you install the version for your operating System, i.e. 32-bit or 64-bit.

For 32-bit (x86), the JDK you want is titled: jdk-7u45-windows-i586.exe

For 64-bit (x64), the JDK you want is titled: jdk-7u45-windows-x64.exe

I recommend installing it to the default directory.

Once you have this installed, make sure to add it to you PATH in Environmental Variables.

To do this, hit the Windows button (like you are going to open an app), or launch the file explorer & RIGHT CLICK on "Computer" & select "Properties".

.Go to "Advanced System Settings" & select the "Advanced" tab.

Select the "Environmental Variables" button towards the bottom right side of the window.

In the second window, "System Variables", scroll to "Path" & select edit.

Add your systems path to the recently installed version of the Java SDK (JDK) to "Variable Value:", it should look something like this:

C:\Program Files\Java\jdk1.6.0_33\bin; (make sure yours reflects your correct version & path to the JDK Bin directory. DO NOT JUST COPY/PASTE MINE). Also take care to have a semi-colon ( both before & after your path & DO NOT ALTER ANY OF THE OTHER VALUES.

I also recommend you add these file types to the entry below, called (PATHEXT):

.BAT;.CMD;.JS;.JSE;.SH

These two steps allow you to use these tools from any directory, telling tools & applications where to find the resources they need.

After installing the Java SDK (JDK), make sure you also have a "System Variable" entry called "JAVA_HOME" with a value that is the same as your environmental variable, pointing to your Java SDK Bin directory. Mine is "C:\Program Files\Java\jdk1.6.0_33\bin" (again, you need to have YOUR installed location, not mine, so do not copy/paste from here).

2. Ensure you have installed the Android SDK. You do NOT need Eclipse, just the SDK. It can be found here: http://dl.google.com/android/install....3-windows.exe

Install the SDK somewhere simple & avoid spaces in directory names. My SDK (when I bother to use Windows anymore, is C:/Android/

I use Eclipse, so for me, my directury tree is "C:/Android/sdk & C:/Android/eclipse" this is where all the important Android tools live, like ADB & AAPT & Fastboot, in /sdk/tools & /sdk/platform-tools.

3. Connect your device to the USB port & give it time to install the proper drivers. Next, open a cmd window & enter: adb devices

If successful, you should see your device serial number listed, similar to this:

C:\Users\gleon>adb devices

List of devices attached

B0xxxxxxxxxSH device

If your device was recognized & you see something similar to the above, congratulations, you have installed the SDK successfully & are now ready for some action. If not, you may need to install the HDX adb drivers. If you are here, you have most likely already done most of the steps above anyways.

4. Once connected via ADB, issue the following commands

adb root

adb shell

su

mount -o rw,remount /system *****- if this fails, try: mount -o remount /system

chmod 644 /system/build.prop

chown root.root /system/build.prop

reboot

Ifv you are still having issues connecting ADB to the device, you may need to star over with your drivers. You may want to try using USBDeview in combination with device manager to uninstall all of the android/mass storage/debug devices & drivers. For Linux, much of above is still the same, though you should be able to skip the paths & variables step & the commands are slightly different, but it works the same way.