There is now a working root method for the Verizon Galaxy S4 I545 VRUEMK2 4.3 update, recently rolled out a while back that brings several bug fixes and improvements. This rooting technique has been already tried and tested for the previous 4.3 released with build number VRUEMJ7. One best part of this rooting process is that it will not triggers the ‘KNOX Warranty Void flag’ that has been included on all Android 4.3 update recently. KNOX is some kind of a security apps that guarding you from installing any unsigned firmware into your device, this includes root kernels, custom recoveries and unofficial ROM. Once you tripped the KNOX warranty flag to 0×1, this cannot be undone.
This exploit will NOT set the Knox Warranty Void flag. It will set the “Custom” flag, but that’s nothing to worry about.
The rooting process requires you to have a computer running on Windows or MAC operating system and of-course your Galaxy S4 USB driver is also needed and little workaround for the few files as your source to root your Galaxy S4 i545 further.
But then again, there is a risk danger involved into rooting your device. There are no any guarantees that this may or may not harm your device. So if you want get your device being rooted by any means, just head-over to our XDA-developers fella [k1mu] at his original thread here - http://forum.xda-developers.com/showpost.php?p=48392009&postcount
Just please read carefully the step by step instructions before jumping into the plunge to avoid messing-up Galaxy S4 i545. Also rest assured that your device is a Verizon Galaxy S4, running Android 4.3 VRUEMK2 firmware
Follow-up instructions into rooting:
Download and unzip the download safe root script file.
Once downloaded the saferoot file, unzip it in single file folder. You will then see three files named as -”install.bat”, ”install.sh” and a folder called “tools” or “files”
Grab the USB drivers and install on your computer.
USB driver – download
Turn-ON USB debugging mode on developer options.
To do this, head-over to your phone Menu>>Settings>>About Phone. Once on About Phone info, scroll down and find the text that says “Build number”. Then tap the Build Number for about seven times, a pop-up message will then prompt you saying ‘You are 4 steps away from being a developer’ until the pop up message says ‘You are now a developer’.
Connect your phone to your computer.
Once the phone was already set into USB debugging mode and installed the USB driver simply plug in the USB cable. If a pop-up message appears that says “Allow USB Debugging” just tap on the “Always allow from this computer” to check it, then tap OK.
Install Root on I545VRUEMK2
Now head-over to the folder where you extracted the ‘Saferoot’ file then simply run root by clicking the “install.bat”. It will then root your phone. Then wait until the phone reboots. That’s it, from there your phone must be rooted, you may then check and confirmed it if the root successfully installed.