How to root Android 4.1.2 firmware? Samsung has start releases Android 4.1.2 firmware to all Galaxy S3 users and lot of users are very enjoy the new firmware that load with lot of new features. But some of users still searching the answer and tutorial on how to root Galaxy S3 Android 4.1.2 firmware.Yup, you can fully control the stock firmware on the Rooted Galaxy S3. This post will show you the complete guide on how to root Galaxy S3 GTi9300 that running Android 4.1.2 firmware. Before start the root process, I think you need to know the reason why, the risks, the precaution, the different between Galaxy S3 system or kernel file before and after rooted.
For your info, Galaxy S3 can boot into 3 different system OS , that are Recovery Mode, Downloading Mode, and Android OS Mode. To boot into the Recovery Mode, you need power off your phone and then hold press the volume up button, home button, and power button. To boot into Downloading Mode or Odin Mode, you need power off your phone and then hold press the volume down button, home button, and power button. To boot into Android OS Mode, then you only need press the power button. Generally, The stock Recovery Mode allow you to delete or reset the phone data. After you root and install CWM recovery into Galaxy S3, the Recovery Mode will change to CWM Recovery Mode that allow you to perform fully backup ROM, install custom ROM, reset data and More. Besides this, the Galaxy S3 system will automatically increase the count by 1 for each time you change the Galaxy S3 firmware or kernel. All of this counter will be record in the downloading or Odin Mode, and Samsung technicians will refer to this system record to confirm either your Galaxy S3 was rooted, kernel was changed or stock rom was modified or not. So, after rooted galaxy S3, i think you need to use triangle away application to reset all the counter data. For more info, you can refer to the Galaxy S3 hints and tips to get more info.
The stock firmware code version for each region is different, for example UK firmware version is I9300XXELL4 and Poland is I9300XXELKC. You can refer here on how to read and check your region firmware code. Then the root method is same to all galaxy S3 GTi9300 that running Android 4.1.2 firmware, example I9300XXELL4, I9300XXELKC and so on . So, I mean here is you only need to make sure that your galaxy S3 is international or model GTi9300. Then Here is the tutorial on how to root Galaxy S3 GTi9300 that running Android 4.1.2 firmware:
Note: Flash or modified Galaxy S3 firmware will void the phone warranty. Method below is only for your reference and only for the international Galaxy S3 GTi9300. Try it on your own risk.
Step 1. You need Samsung Diver to enable your PC able detect and connect to your Galaxy S3. So you can Download Samsung Galaxy Driver (Link) or Downloadand install Samsung Kies on your PC. Restart your PC after installation complete.
Step 2. Download (Link) the Galaxy S3 CF Auto Root(CF-Auto-Root-m0-m0du-gti9300t.zip) and then Extract the file and now you will get ( CF-Auto-Root-m0-m0du-gti9300t.tar file).
Step 3.Go Setting >Developers option to enable USB Debugging on your Galaxy S3 and then Power off your Galaxy S3.
Step 4.Press your Galaxy volume Down+ Power Button + Home Button to enter Downloading Mode.
Step 5. Open Odin (download Link) on PC, then connect your Galaxy S3 to PC via USB connect USB.
Step 6. Make sure Odin Detect your Galaxy S3 (How to know).
Step 7. Press Odin PDA, then select the downloaded firmware (CF-Auto-Root-m0-m0du-gti9300t .tar).
Step 8.Now click Odin Start button to Flash the CF Auto Root Kernel into your galaxy S3. Don’t unplug Galaxy S3 connection from computer during the process flashing Android CF Auto Root Kernel.
Step 9.That all! Your Phone will reboot once the Root Kernel complete flash into your Galaxy S3.
That’s all Enjoys! Then you can refer here on how to reset the Galaxy S3 flash counter.