JTAG? - Fire HD 6 and 7 Q&A, Help & Troubleshooting

If possible, I could use some help identifying (potential) JTAG pads on the new Fire HD 6. Below are photos of the board courtesy of ifixit.com ..
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The areas of the board that immediately sparked my interest are labelled JDEBUG, JDBG2, and JDBG3. I've googled the hell out of those identifiers, and have been searching for schematics for the MT8135, but information is thin - i'm assuming its because this SoC is relatively new. Does anyone have have any tips or suggestions on how I may be able to go about testing these pads? I have a multimeter and most importantly, a brain , but i'm inexperienced when it comes to JTAG and hardware debugging so any advice would be greatly appreciated. Thanks!

I found it! It's on JDEBUGhttp://forum.xda-developers.com/showthread.php?t=2991474

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