How To Root Samsung Galaxy S3 (4.1.2)

If you plan on rooting Samsung Galaxy S3 4.1.2 to gain full access of it, then this post is for you. However, before doing it, you should know the proper procedure and risks related.

1. Your personal data and settings etc. will probably be erased. So, if you want to keep them saved, use backups for the purpose.
2. You should be running Android 4.1.2, Jelly Bean.
3. Warranty will become void. Nonetheless, you may reinstall the official firmware update to claim the hardware warranty.
4. In order to check whether you’ve done the following successfully or not, download and install Root Checker app from Google play store.
5. You shall follow all the procedures at your own risk, i.e. in case of any damage, you cannot hold anybody responsible for it.


1. You definitely do not want to see a shutdown during the S3 4.1.2 root, so make sure to have at least 80 percent battery power before you start the actual procedure.
2. The correct USB drivers must be installed on the computer.
3. Before starting the process, make sure you are running on the official XXBLL3 Jelly Bean firmware.
4. Enable USB debugging mode by going to settings > applications > development.

Here’s how to start the Galaxy S3 4.1.2 root:

Download CF Auto Root specifically for I9305XXBLL3 firmware and extract the zip file.

Download Odin3 v1.85.

After powering the phone off, put it on download mode by pressing volume down, home and power buttons together. You will then see a warning message on the screen, press power button once again to enter the download mode. This is needed to start up the rooting of your Samsung Galaxy S3 4.1.2.

Run Odin3 v1.85.exe as an Administrator.

Connect to your computer. You will then see a message saying ‘added’ under the Odin’s message box. Also, there will be visible a COM port with a number in yellow.

Click PDA tab in Odin and select CF Auto-Root-m3-m3zh-gti9305.tar.md5 file.

Click on start button in Odin to begin installing.

As the flashing completes, a PASS message with green background will appear at the top of Odin. An automatic reboot will occur.

Once the Samsung logo appears, you can unplug and disconnect from the computer! Now the 4.1.2 Galaxy S3 root is finally completed and you can officially be called a rooter!

Make sure to check out my Galaxy S3 page for future updates.

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