This Android Root software could help you Root Samsung Galaxy S3 I9300/S4/S5/S6/S7 all in one click.
How to Root Samsung Galaxy S3 I9300/S4/S5/S6/S7 with One Click
Step 1 Connect your Samsung Galaxy S3 I9300/S4/S5/S6/S7 to PC.
Step 2 Click Toolbox tab. In the Other Tools section, click One-click Root to root and get full-control of your Samsung devices. Read the warning message and click Root to start the process. Please wait while TunesGo Android Root is getting root access. Be patient, because it can take a while.
We all know that rooting your Android device voids the warranty, which is the first reason that some people don't want to root their devices. Actually, there are still more benifits that you want get from rooting your Android device, like enjoying more free apps, easily upgrading to the lastest OS, ditching the skin, and more. If you've decided to root your Samsung Galaxy S3 I9300/S4/S5/S6/S7 on XXUFMB3 Android 4.2.1, read on and follow the steps below to get it done.
Remember the notes below before you get started:
1) This rooting guide is only for Samsung Galaxy S3 I9300/S4/S5/S6/S7. Please don't try it with other devices.
2) Your device should be on XXUFMB3 Android 4.2.1 software version.
3) Back up all data on your device as a precause, to prevent data from losing.
Step 1. After downloading the ZIP files, extract them.
Step 2. Switch your device off, and go to the Download Mode on it. How? Press and hold the Volume Down and Home buttons at the same time, and then press the Power button untill you see the construction Android robot and a triangle. Press the Power button again to confirm to enter into the Download Mode.
Step 3. Make sure you have your Galaxy S3 USB drivers installed on your computer. If you don't have, you can download it here.
Step 4. Open Odin3 on your computer. Connect your phone to your computer while your phone is in the Download Mode.
Step 5. If your phone is connected successfully, one of the ID:COM boxes will turn yellow with the COM port number. This step might take some time.
Step 6. Now select the root package file that you have to flash/install on your phone. These files are to be found from the extracted file in Step 1.
Then tick off PDA and browse to select the file CF-Root-SGS3-v6.4.tar to load it in.
Step 7. In ODIN, check the Auto Reboot and F. Reset Time options. Do NOT touch any other options.
Step 8. Now click on the Start button in ODIN. Installation process will start and would take a few minutes to complete.
Step 9. After the installation is completed, your phone will restart. After you see the home screen, unplug your phone from the computer.
That's it. Your Samsung Galaxy S III has now been rooted on Android 4.2.1 build XXUFMB3 software update. Check for the Superuser app in your apps list to verify.