The LTE version of Galaxy S3 (GT-I9305N) recently received a new Android 4.3 Jelly Bean stock firmware build with base firmware I9305NXXUEML1. The update is available for users in Nordic countries. It can be installed as OTA update and through the Kies server.
Version: Android 4.3 Jelly Bean
Build date: 13 December
Region: Nordic Countries
Click here for our guide to install I9305NXXUEML1 Android 4.3 Jelly Bean on Galaxy S3 LTE.
Those who have already installed the new firmware build on their LTE variants may follow our guide to root the same. The root method uses Chainfire's CF-Auto-Root package, which contains SuperSU binary and APK and stock recovery.
IBTimes UK reminds its readers that it will not be held responsible for any mishap. Users are also advised to verify that their devices meet following set of requirement.
1) Install USB Driver for Samsung Galaxy S3 to transfer files between the Android device and 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 ClockworkMod or, TWRP then backup data using the recovery.
4) If the Android phone powers off due to lack of battery while the installation process, it could damage the device. Therefore, the Galaxy S3 should have charge above 80% battery charge.
5) The device will lose its manufacturer's warranty once it is rooted.
6) The CF-Auto-Root files work only with the Galaxy S3 LTE GT-I9305N. As applying this on any incorrect variant might brick the device, verify the model number of Galaxy S3 by navigating to Settings>> About phone>> Model number.
How to root Samsung Galaxy S3 LTE on I9305NXXUEML1 Android 4.3 Jelly Bean
Step-1: Download CF-Auto-Root file for Galaxy S3 LTE to computer
File name: CF-Auto-Root-m3-m3swexx-gti9305n.zip
Step-2: Extract the root zip using Winzip/7zip/winrar or any other extracting tool to get CF-Auto-Root-m3-m3swexx-gti9305n.tar.md5 file
Step-3: Download Odin3_v3.07 and extract it to get Odin3 v3.07.exe file
Step-4: Switch off Galaxy S3
Step-5: Boot the phone into Download Mode by pressing and holding Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on the phone's screen. Press the Volume Up button to enter into Download Mode
Step-6: Run Odin3 v3.07.exe as Administrator
Step-7: Connect the phone to the computer using USB cable while it is in Download Mode. Wait for some time until Odin detects the device. When the phone is connected successfully, an Added message will appear under Odin message box. Additionally, the ID: COM box in Odin will turn blue with the COM port number indicating successful connection
Note: If the Added message does not appear then try another USB port, try the one located at the back side of the computer. In case Odin still fails to recognise the device then reinstall USB driver.
Step-8: In Odin, click the PDA button and select CF-Auto-Root-m3-m3swexx-gti9305n.tar.md5 file which was extracted earlier
Step-9: Verify Auto-Reboot and F.Reset Time checkboxes are selected in Odin
Step-10: Click the Start button in Odin to begin the installation
Step-11: When the installation process is completed, the phone will restart and soon a PASS message with green background will appear in the extreme left box at the very top of Odin. Unplug the USB cable from the phone to disconnect it from computer
The Galaxy S3 LTE should now be rooted on I9305NXXUEML1 Android 4.3 Jelly Bean firmware. You may now install any app that requires root permission. Also, verify the root status of the device by downloading Root Checker app from Google Play Store.
Sometimes the device does not boot into Recovery Mode and root the device. If this happens, then perform the entire procedure again. If it still does not install root, ensure Auto Reboot checkbox in Odin is not checked. Then, after flashing the root package, pull out the battery and boot the phone into Recovery mode by selecting Volume Up, Home and Power buttons together. This will start the install process and root the phone.
[Source: Honai of Android]