[T-Mobile, Samsung Galaxy SIII] cLogic:
WARNING: Following any of these instructions WILL void your warranty,

and could possibly cause irreparable harm to your device (i.e. bricked)

If you do Not understand these risks, stop here and do Not proceed.

If you do Not know how to use Odin, stop here and do Not proceed.

This guide is ONLY for SGH-T999 variants that are ALREADY RUNNING android 4.3

If you do Not have a SGH-T999 variant, stop here and do Not proceed.

If you are Not currently running android 4.3, stop here and do Not proceed.

I am not responsible for anything that happens to your device. YOU chose to follow this guide.

I have the SGH-T999V (samsung galaxy S3, canada, Videotron)

I flashed the full 4.3 firmware from samsung-updates.com as soon as it became available ... and then I tried to root it the usual ways

However knox prevented the superSu app from running, and it closed immediately, and obviously root was Not available to any app

This method will obtain ROOT and REMOVE the knox garbage

note ... altho it is optional to remove knox, I have

Not

tested without removing knox and do Not know if root will work using this method (guide) with knox still installed !

I did NOT create this method ... I simply found it, read thru user comments, and used it

FULL CREDIT goes to

@upndwn4par for the method ... the thread is here

@Kaito95 for the Knox Removal script ... the thread is here

@Dees_Troy for the TWRP recovery

@Chainfire for SuperSu

as you can see, this method was for the AT&T, Rogers, Bell, Telus Samsung Galaxy S3 ... I747 variants, I believe

So here is how I achieved a successful root on 4.3 using the above method, with adjustments for our T999 variant

Using Method #2

1. Download required files

a) download Odin 3.07 to your

PC

​

b) download the latest TWRP recovery for your device, in

TAR

format, to your

PC

click on your device here

scroll down on your device page to the section called Download - Odin Flashable Tar

below that, click on the Select the latest .tar file from here link

scroll to the bottom of the files and click on the latest

TAR

version

note to d2tmo users ... thanks to [MENTION=3639717]Perseus71[/MENTION] it has been noted that 2.6 versions may have issues on your device, and it is recommended that you choose the 2.5.0.0 TAR version

example: Mine looks like this: openrecovery-twrp-2.6.3.0-d2can.tar

note to T999V users ... both d2can and d2tmo work for our device ... I personally use d2can
​

c) download SuperSu 1.65 zip to your

DEVICE

​

c) download Knox Removal zip to your

DEVICE

​

2. Reboot into Download mode ... VolumeDOWN + Power + Home

Run Odin

make sure that re-partition is NOT checked!

click the PDA button and point to the TWRP recovery TAR file that you downloaded above

connect your device to the computer ... wait briefly

the COMM port in top left box should turn blue

click Start

when it is done, PASSED, and phone has rebooted, disconnect device

3. Reboot into Recovery mode ... VolumeUP + Power + Home

Flash (install) the Knox Remover zip

Flash (install) the SuperSu zip ... it is version 1.65, current is 1.80, so it will prompt us to update later :good:

Reboot System

4. Update SuperSu from the Play Store

5. Open SuperSu

it should prompt that it needs to update the binary

accept and let it update the binary the Normal way

6. Reboot

7. Enjoy rooted 4.3, knox-free :laugh: :good:

​

thanks again to [MENTION=3639717]Perseus71[/MENTION] for noting that it is possible that the default Enforcing mode of SElinux may cause issues with the ability and/or performance of some root apps despite being granted root permission

if you are experiencing similar issues, he recommends that you check out the SELINUX Status Changer app.

[I have Not personally tested this app]