The Android 4.3 Jelly Bean update for Galaxy Note 2 brings Samsung Knox security protection, which was introduced in the current Galaxy Note 3.
Users can activate Samsung KNOX, which allows running and storing security-sensitive applications and data inside a protected execution environment called container.
The security inside the container is strengthened by system-level protection of Samsung KNOX against malware and phishing attacks as well as hacking attempts on physical devices when devices are stolen or lost.
XDA developer k1mu has released a root exploit without tripping Knox warranty void bit. This root exploit works on a number of Android-powered devices. It does not void the device of its warranty but sets the custom flags. Besides, the root exploit package installs su, SuperSU and other necessary support files to enable the root.
This rooting process should work with a wide range of Android devices, particularly those running Linux Kernel before 3.5.5 (which most Android 4.3 ROMs use.) It's known to work for may GS4 variants and is harmless if it fails to work (no "Warranty Void" flags get set.), notes the developer. Head over to the development thread to learn more about the root release.
Galaxy Note 2 users, who wish to root their devices, may follow our step-by-step guide below.
IBTimes UK reminds its readers that it will not be held liable for any damage to the device. Users are advised to ensure their devices meet following set of requirements.
1) Install USB Driver for Samsung Galaxy Note 2 to connect the Android device with the computer.
2) Enable USB Debugging Mode on phone to connect it with computer and use Android SDK with it. [Navigate to Settings>> About phone. Tap on Build Number several times until a message appears saying 'You are now a Developer.' Now enable USB Debugging Mode by navigating to Settings>> Developer Options.]
3) As the tutorial might wipe out all data of the phone, create a backup. If the device is having any custom recoveries such as CWM/TWRP then backup data using the same.
4) If the Android phone powers off due to lack of battery while the installation process, it could damage the device. Therefore, the Note 2 should have charge above 80% battery charge.
5) The Root Exploit package works only with Samsung Galaxy Note 2 N7100. As applying this to any other variant might brick the device, verify the model number of Galaxy S4 by navigating to Settings>> About device>> Model number.
How to root Samsung Galaxy Note 2 N7100 on Android 4.3 without tripping Knox
Step-1: Download Root Exploit for Samsung Galaxy Note 2
Download link: saferoot.zip
Step-2: Extract the Root Exploit package using WinRAR/7-zip/WinZip or any other extracting tool
Step-3: Connect the Galaxy Note 2 to computer using USB cable
Step-4: On the computer, navigate to the extracted directory and double click install.bat file. A command prompt window will appear, which will detect your device and automatically run the scripts
Step-5: Follow the on-screen instructions. When the process is completed, the phone will reboot automatically
Samsung Galaxy Note 2 running on Android 4.3 should now be rooted successfully. You may now install any app that requires root permission. Also, verify the root status of the phone by downloading Root Checker app from Google Play Store.
Note: This procedure will not set the Knox warranty void flag. It will set the Custom flag, which is nothing g to worry about. This method has been tested working on Galaxy Note 2 N7100 running Android 4.3 Jelly Bean with base firmware MK9 and MKA.
[Source: Honai of Android]