A new official build with base firmware XXEMG6 has been released for the international version of Galaxy S3 with model number GT-I9300. The update is based on Android 4.1.2 Jelly Bean and was baked on 26 July.
Those who are having an unrooted version of Galaxy S3 with no custom firmware installed can connect the device to their computers and install the latest update via Samsung KIES utility. Users can also look for the latest firmware through OTA update feature from Settings>> About phone>> Software Update.
Click here for our step-by-step guide to install XXEMG6 Android 4.1.2 Jelly Bean on Galaxy S3 I9300.
Those who have updated their devices to the latest official firmware may follow our guide to root the same.
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 to the computer.
2) Enable USB Debugging Mode on phone to connect it to the computer and use Android SDK with it. [Press Menu>> Settings>> Applications. From there, navigate and click on the Development option and check the 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 it of its manufacturer's warranty. Users can reclaim the warranty by unrooting the device. 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 the Samsung Galaxy S3 GT-I9300. As applying this to any other variant might brick the device, verify the model number of your Galaxy device by navigating to Settings>> About device>> Model number.
Steps to root Samsung Galaxy S3 I9300 on XXEMG6 Android 4.1.2 Jelly Bean
Step-1: Download CF-Auto-Root file for Samsung Galaxy S3 to the computer
File name: CF-Auto-Root-m0-m0xx-gti9300.zip
Step-2: Extract the downloaded root zip file to get a .tar.md5 file within it
Step-3: Download Odin3 v3.07. Extract the Odin zip to get Odin3 v3.07.exe with a few other files
Step-4: Turn off the Galaxy S3. Wait for about five to six seconds for vibration to confirm complete power off. Then boot the device into Download Mode by pressing and holding the Volume Down and Home buttons together and then press the Power button until the construction Android robot and a triangle appear on the phone's screen. Now press the Volume Up button to continue to enter Download Mode
Step-5: Run Odin3 v3.07.exe as an Administrator [To do so, right-click on Odin.exe and click Run as Administrator from context menu.]
Step-6: Connect the Galaxy S3 to the computer using USB cable while it is in Download Mode. Wait until Odin detects the device. When the phone is connected successfully, an Added message will appear under Odin's message box. Additionally, the ID: COM box in Odin will turn blue with COM port number indicating successful connection.
Note: If the Added message does not appear, then try the USB port at the back of the computer. In case Odin still fails to recognise the device, then re-install USB driver.
Step-7: In Odin, click the PDA button and select the CF-Auto-Root-m0-m0xx-gti9300.tar.md5 file
Step-8: Configure Odin settings. Verify Auto Reboot and F.Reset Time checkboxes are selected in Odin. But uncheck Re-Partition option
Step-9: Click the Start button in Odin. The installation should now begin and take about few minutes to complete
Step-10: When the installation process is completed, the phone will reboot automatically and soon a PASS message with a green background will appear on the extreme left box at the very top of Odin box. Users may now disconnect the Galaxy S3 from the computer
As the Galaxy S3 boots up, it should be rooted successfully on XXEMG4 Android 4.1.2 Jelly Bean official firmware. Users may now install any app that requires root permission. Also, to verify the root status, install the Root Checker app from Google Play Store.
[Source: Droid Fimrwares]