[Samsung Galaxy Mega] DarkAngel:
I know you stated you had tried it all but I have a couple questions for you.

#1. Are you able to odin and access the latest PhilZ Recovery on your Mega? I ask because I read other sections like the Note 2's, etc on AT&T and they are able to flash recovery fine and boot into recovery fine.

#2. If you have tried this method, did you try and flash the latest SuperSU v2.00 from Chainfire through PhilZ?

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Below is a method I suggested to some in my OTA Update thread to NE4 ( KitKat ) for Rooting all my Galaxy phones on KitKat listed and not one has failed to gain root or to disable KNOX. Note this method will trip KNOX and void your warranty. Try this at your own risk....

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1.Flash the latest Philz recovery ( Galaxy Mega (meliusltexx) ) .

1a) Be sure when flashing a custom recovery

not

to allow the device to reboot into the OS right after and instead go straight to the recovery first.

( Uncheck reboot device in Odin or if you forgot to uncheck the box

after a successful flash of the Custom Recovery

in Odin, quickly hold down vol+, Menu & Power Button or last resort pull the battery before it has time to reboot into the OS {again this is

after

the phone reboots from flashing the custom recovery and passes}).

The security will over write the custom recovery with the stock recovery and you will have to flash Philz or if available TWRP again. First boot into custom recovery will make it stick on after.

2. Once flashed and booted into recovery, you'll be on the main screen.

( Optional but recommended )

2a) At this point,

and it is just a suggestion to you all

,

make a complete backup of the phone as it sits unmodded

. I couldn't really tell you how many times I have read/seen of people post that they forgot to back up their phones after they had attempted to do something to their phones and had caused them to have problems..... well many would be surprised how often this happens and I have been guilty of it due to just being impatient.

This way you will have a starting point fresh, stock and even unrooted to go back to.

After your done proceed to step #3.

3. Tick on

Philz settings

.

4. Tick on

Re-root System (Super SU)

.

5. You will then see the log scroll at the bottom and tell you to reboot and install SuperSU through the Playstore.

6. Reboot Device and once you have booted up, install SuperSU via Playstore or if you have the APK on hand, install it.

7. Once installed it will ask you that it needs to update binaries, do so. It will also detect KNOX and ask to attempt

to disable it, go ahead and it will attempt to do so. ( I have yet for it to say unsuccessful )

8. Enjoy being rooted afterwards.

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If after step #6 it fails to update binaries or for some chance the SuperSU APK failed to install properly or failed to provide Root Access, below is a link for the newer SuperSU v2.00 that is flashable in your Custom Recovery. Flash it by

rebooting back into Recovery

and

flashing the ZIP file

that's downloadable from

the middle of the main page

in the

link below

. Once flashed continue on from step #6 above.

Thank you @Chainfire

SuperSU v2.00 <------- click here

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