[Kindle Fire HDX 7" & 8.9" Q&A, Help & Troubleshoot] wjgranda:
Getting insane.

Ty in adv for your possible help. Also, I do apologize if I am posting in the wrong thread, also, English is not my first language, I am from South America.

I am getting crazy trying to root my Kindle device (Amazon KFAPWI (Kindle Fire HDX 8.9) 3rd Gen. I tried kinda all... also, I am some familiar with flashing and rooting, but this is highly advanced, also, I am more or less familiar with ADB and SU stuff, but I do prefeer the scripts (thanks to the developers).

I saw several threads in XDA Developers, I did a lot of stuff but no luck.

This is the result of the rooting process with KFHDX TOOLKIT v0.95:

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Executing Exploit...

Device detected: ()

Try to find address in memory...

Attempt msm_cameraconfig exploit...

Detected kernel physical address at 0x00008000 form iomem

Attempt fb_mem exploit...

Detected kernel physical address at 0x00008000 form iomem

Failed to open /dev/graphics/fb0 due to Permission denied

You need to manage to get remap_pfn_range addresses.

Failed to get prepare_kernel_cred addresses.

Failed to get commit_creds addresses.

Failed to get ptmx_fops addresses.

() is not supported.

Failed to setup variables.

Done!

If this is your first time rooting please install HDXposed and disable ota.

Presione una tecla para continuar . . .

Checking root...

Please grant root on your device!

/system/bin/sh: su: not found

Presione una tecla para continuar . . .

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And I tried with Kindle Fire First Aide x64, here is the results:

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* Root Failed. Please Run Option 21 Again, Sometimes *

* The Process Need To Be Repeated Several Time Before You Will *

* Successfully Root The Kindle. If This Method Fails More Than *

* 5 Times Try Option 20 Which Uses A Different Method To Root *

* The Kindle. *

************************************************** **************

* daemon not running. starting it now on port 5037 *

* daemon started successfully *

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* We Are Now Performing A Cleanup Of The Temp *

* Directory. If you See The Following Error *

* The Directory Is Empty. The Error *

* rm failed for *, No such file or directory *

* Is Expected And Can Be Ignored. *

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*Finally, If You Loose The Navigation Bars After*

*Rooting The Kindle, There Is A Easy Fix. Please*

*Drop To Command And Enter The Following Command*

* adb shell su -c rm /data/local.prop *

* If You Have To Execute This Command Pay Close *

* Attention To The Kindle For A SuperSU Or *

* Superuser Popup Or Request, Be Sure To Click *

* Allow Or Grant. This Will Solve The Missing *

* Navigation Bars! *

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El sistema no puede encontrar la ruta especificada.

/system/bin/sh: busybox: not found

/system/bin/sh: su: not found

/system/bin/sh: su: not found

/system/bin/sh: su: not found

/system/bin/sh: su: not found

/system/bin/sh: su: not found

/system/bin/sh: busybox: not found

/system/bin/sh: su: not found

/system/bin/sh: su: not found

mount: Operation not permitted

Presione una tecla para continuar . . .

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If there is any help that will be very appreciated, or if any can show me the link of the proper thread.

Ty nice ppl!!!!