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This article will teach you how to root Samsung Galaxy S3 on Android Jellybean 4.3. If you are a owner of Galaxy S3 GT-I9300 which is running on Android Jelly Bean 4.3 build with base firmware I9300XXUGNA7, you can gain root access using this simple guide. Before you continue with the tutorial, you should know What does rooting mean? Rooting is nothing but gaining the access to root of the operating software which lets you install custom ROM’s, custom themes and modify the phone’s OS in any possible way.

Initially the manufacturer of the phone will not give permissions to access root. You cannot install all these custom ROM’s or any other custom firmware. So, if you desire to use your phone to its full capacity, you should root it i.e., you should gain the access to root. Rooting has many pros, have many cons though. Rooting voids the manufacturers warranty for the device. Further, it may possibly brick the operating system which makes the device function improperly and in some case it may become useless. So, if it is your own decision to root Samsung Galaxy S3, go through the prerequisites listed below to safeguard your personal data and operating software.


Samsung USB Drivers

To root Samsung Galaxy S3, it is to be connected to a PC. For the PC to detect your phone, you should install Samsung USB drivers. If you have already installed them, ignore this message. Else, go through the below link to download Samsung USB Drivers.

Get Samsung USB Drivers

Backup Important Data

Good to see you that you are done with installation of USB drivers. We know, it is mandatory to backup important data on phone before we root/install ROMs. If anything goes wrong while rooting, it wipes the entire data. So, backup is recommended while updating an Android phone. If you are not sure about what to backup and how to backup? take a look below:

  • Backup Apps, Wanna know how? Check this >> How To Backup Android Apps ?
  • Backup SMS Messages, Wanna know how? Make use of SMS Backup & Restore App
  • Backup Contacts, Mail data, Google Data, Wanna know how?, Just sync them with Google Sync.
  • Backup Call Logs, Wanna know how? Make use of Call Logs Backup & Restore Android App   
  • Backup phone settings like Access Points, GPRS Settings, Connectivity Settings. Wanna know how? Note them on a paper or something.

Few More Prerequisites

  • You have already installed USB drivers on your computer. Even though if your phone fails to detect the PC, make sure that whether you have enabled USB debugging on your Android phone. The path to enable it varies for different versions of Android operating systems like Jelly Bean, Ice Cream Sandwich, Gingerbread.
  • Double check your device model before you get started with the installation. If you install non compatible ROM on your phone, it may brick the operating system. So, make sure that your phone model matches with the model we mention in the article.
  • Make sure the phone’s battery is at least 75% full to ensure that it should not run out of battery while installing the ROM.
  • Download all the required files listed in the downloads section and keep them in a folder to be handy for you.

If you have completed all the above steps, you can now continue with installation process which is a bit typical. Make sure that complete every step in an orderly manner.

Downloads Required

CF Auto Root Package Zip File

ODIN v3.09

How To Root Samsung Galaxy S3 GT-I9300 On Android JellyBean 4.3 ?

Things To Remember:

Disclaimer: The Custom ROM’s, Firmware, Software, Applications, Mods and any other tools shared/mentioned in this article belongs to their respective developers. Neither our team nor the developers are responsible to any losses that occur to your device while installation. So, you are suggested to continue with the tutorial at your own risk. Think before you act. 

Warning: Make sure that you double check the model name/number we mention in the article. Attempting to install the firmware on any other model may brick the OS.

Rooting Warning: Rooting voids the manufacturer’s warranty for the device. It may possibly brick the operating software of the device. So, make sure that you continue to the tutorial with your own decision.

how to root samsung galaxy s3

Step-By-Step Tutorial

Step 1: Download the required files from the downloads section to your PC.

Step 2: Extract the CF-Auto-Root package to get a .tar.md5 file.

Step 3: Turn off the device and hold Volume Down+Home+Power buttons together for more than 3 seconds and wait until the warning screen appears.

Step 4: Read the warning, press Volume up button to continue and Volume Down button to cancel the process.

Step 5: Once you press the Volume Up button the phone enters the OS download mode. Now run the ODIN v3.07 or v3.09 on your PC as an administrator and connect the Galaxy S3 to the same PC in the OS download mode.

Step 6: If the connection is successful, you can see a yellow color highlighted box with ID and a number in the ODIN user interface. Now click on AP button in ODIN and choose the CF-Auto-Root-mO-mOxx-gti9300.tar.md5 file from the extracted zip.

Step 7: Make sure that the Auto-Reboot and F.Reset Time options are checked in the ODIN.

Step 8: Click Start button which starts flashing the root file on your phone.

Step 9: Once the installation completes successfully, a Pass message appears on the extreme left box of ODIN and the phone reboots automatically. Then unplug the device from the PC.

That’s all! You have successfully rooted Samsung Galaxy S3 on Android 4.3 build I9300XXUGNA7 firmware. To check whether the device is rooted successfully, you can use Root Checker app available for free on Google Play Store.

If you face any issues during the tutorial, feel free to mention your words in the comments section. We will be glad to help you.