Samsung has started seeding Android 4.3 Jelly Bean official update for its third generation Galaxy S series handset with model number GT-I9300, which is running on older Android version 4.1.2.

Galaxy S3 I9300
Samsung releases Android 4.3 official update for Galaxy S3.

The Android 4.3 upgrade integrates a host of new features and improvements for the Galaxy S3. It adds support for Galaxy Gear and brings an enhanced UI. New Samsung Keyboard and Daydream are a few of the key features. Click here to learn more about the Android 4.3 new features for Galaxy S3.

The update with build version I9300XXUGMJ9 is now available in for the Galaxy S3 users in Ireland. As the update is rolling out in phases, it may not be available in all countries at the moment. The official build is available to download as OTA update and through Samsung Kies. It can be also installed on GT-I9300 units using Odin flashing tools.

Click here for our step-by-step guide to install I9300XXUGMJ9 Android 4.3 Jelly Bean official update on Galaxy S3.

Galaxy S3 users who have already installed Android 4.3 official firmware and currently looking for a root method, may follow our step-by-step guide. The tutorial uses CF-Root package released by recognised XDA developer, Chainfire.

IBTimes UK reminds its readers that it will not be held responsible 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 S3 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. [Press Menu>> Settings>> Applications. From there navigate and click on Development option and check USB Debugging Mode.]

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 already installed then backup data using the recovery.

4) The Galaxy S3 should have above 80% charge battery charge.

5) The device should be factory unlocked and not locked to a particular carrier.

6) Rooting the phone will void its manufacturer's warranty. Users can reclaim the warranty back by unrooting the same. Click here for tutorial to unroot Samsung Galaxy S3 to stock official firmware and reclaim warranty.

7) The CF-Auto-Root package works only on Samsung Galaxy S3 GT-I9300. As applying this to any other variant might brick the device, verify the model number of Galaxy S3 by navigating to Settings>> About device>> Model number.

Steps to root Samsung Galaxy S3 on I9300XXUGMJ9 Android 4.3 Jelly Bean

Step-1: Download the CF-Root file for Galaxy S3 to the computer and extract the downloaded zip file to get a file with .tar.md5 extension

File name:

Step-2: Download Odin3 v3.07. Extract the Odin zip to get Odin3 v3.07.exe

Step-3: Power off the Galaxy S3. Place the phone into Download Mode by pressing and holding Volume Down, Home and Power buttons together until the construction Android robot and a triangle appears on the screen. Press the Power button again to continue to enter into Download Mode

Step-4: Run Odin on computer

Step-5: Connect the Galaxy S3 to computer 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. Also, the ID: COM box in Odin will turn yellow with the COM port number, indicating successful connection

Note: If the Added message does not come then try another USB port, try the one located at the back side of the computer. If Odin still fails to recognise the device then re-install USB driver.

Step-6: Click PDA in Odin and select the CF-Root-SGS3-v6.4.tar file

Step-7: Verify Auto Reboot and F. Reset Time checkboxes are selected in Odin window

Step-8: Click the Start button in Odin to begin the installation which would take about a few minutes to complete

Step-9: When the installation process is completed, the phone will restart automatically. After the home screen appears, disconnect the phone from the computer

Galaxy S3 running on I9300XXUGMJ9 Android 4.3 Jelly Bean official firmware should now be rooted successfully. Open the app drawer of the phone and look for SuperSU app. To ensure the root method is installed and working properly, install Root Checker app from Google Play Store.

Also read: Android 4.3 Jelly Bean Update for Galaxy S3 Pulled

[Source: Team Android]