How to Root the Samsung Galaxy S 4G (SGH-T959V)

The Samsung Galaxy S 4G is a slightly tweaked version of the Vibrant on T-Mobile and is similar in most respects to the original device except for its 4G support.  This how-to will show how to root this device running Gingerbread 2.3.6 and if your device is still on Froyo 2.2.1, help you upgrade to Android 2.3.6 and then root it.

I.  Upgrading to Android 2.3.6 Gingerbread

Skip this section if you are already running Android 2.3.6.

1.  Download and Kies Mini.

2.  Make sure USB Debugging is not enabled on your device.  Go to Settings > Application > Development and then uncheck the USB Debugging tickbox to do this.

3.  Open Kies Mini and connect your device to the computer.

4.  Select Kies when your device asks for the type of connection.

5.  Once the device is recognized and the necessary drivers are installed, click Upgrade.

Once your device reboots, it should be running Gingerbread 2.3.6.

II.  Backing up the efs Folder

The files in the efs folder at the root of your device’s file system are very important and if anything should go wrong, these files will aid in getting your device working again.  Here’s how to back them up.

1.  Download and install File Expert.

2.  Open File Expert on your device and click on My Files > Phone Internal Storage.

3.  You should now see a folder named efs here.  Tick the checkbox next to it and then click on Copy.  Now, navigate to a folder on your SD card and paste it there.  You can then connect your device to a computer and back it up in a safe location on your PC.

III.  Rooting the Galaxy S 4G

1.  Download SuperOneClick (mirror).

2.  Extract the SuperOneClickv2.3.1-ShortFuse.zip you download above to a folder on your desktop.

3.  Enable USB Debugging on your device.  Go to Settings > Application > Development and then check the USB Debugging tickbox to do this.

4.  Connect your device to your PC.

5.  Double-click SuperOneClick.exe from the extracted folder.

6. Click on Donate Later.

7.  Finally, click on Root.

Your Galaxy S 4G should be rooted once it reboots!!

All credits go to shortfuse for creating SuperOneClick tool and to lumin30 for clearing up the finer points of the whole procedure!!  Be sure to thank or donate to them (you can click on Donate Now on the SuperOneClick application when prompted) if you liked this procedure!!

This is part of our Android How To’s. We have how to’s on rooting, loading ROMs, and tons of other tips and tricks for your specific device or for Android devices in general! For all of our Android How To’s, head here.

If this procedure helped you, please consider donating to the original developer or at least sending them a thank you.

Now that you are rooted, head here to learn some of the fun things you can do!

For all the devices we have rooting procedures for, head here.


Something Wrong? If you notice an issue with the procedure (broken link, steps out of date, etc.), use this form to let us know! Otherwise, if you just are having trouble with the procedure, reach out to us on Twitter, Facebook, or Google+.

  • sandy

    Hi ..I bought a Samsung Galaxy S4g , but I can not activate the network in Syria ..How do I activate the network and thank you.

  • zach

    does the device need to be in download mode

  • Max

    when i try to copy my efs folder to my sd card it keeps on saying that the operation failed. What should I do? please help

    • UUbuntu

      I had the same problem. Using SuperManager rather than File Expert allowed me to back up the efs folder to the SD card and to proceed.

  • Jorge

    I follow all de procedure and the process stop in the step # 5

    ShellCommand0.16s

    • AB

      same here, it stops on step #5 I also show m failed on steps 1 and 2

      • Dax Krishna

        are you sure you have updated to Android 2.3.6?

      • MJR

        Me too. And yes, all steps followed as far as I can see. ADB drivers good. Android 2.3.6. USB Debugging mode enabled. Wierd about the Trojans in the Zip file though.

  • http://www.facebook.com/people/Ronald-Moscatello/100001410621259 Ronald Moscatello

    If the procedure goes wrong and the phone don’t work how do you restore the phone using the files you saved on your computer with file expert ?

    • Mahesh Makvana

      In case the procedure goes wrong and your device stops responding, you’ll need to flash the stock firmware and then restore the backup your created using File Expert.

      Hope it helps!

  • George Smith

    i try to back up the efs folder, and im getting operation failed.

    • Vic So

      I’m having the exact same issue. It shows “operation failed” after I “paste”. When I check my sd card, the folder is there but its empty. Any ideas?

  • amit

    i have a sgh-t959v at the time of updation from karnel 2.2.1 to 2.3.6 the mobile get hang on starting screen so please help me to start my mobile

  • trevor

    when i click on root it makes the program say not responding what do i do?

    • Dax Krishna

      give it some time Trevor, it should work…are you sure you followed the steps as listed above correctly?

  • confusedhuman01

    There are two trojan horse files in the zipped folder…tried downloading from a different source and the same thing happened

    • MJR

      I see these two trojans as well. My AVG neutralized them and I kept going. But the rooting is not working. Fails on step 1 from what I can tell, though it doesn’t stop till after step 5. Maybe they aren’t really Trojans and are in fact necessary?

  • G

    Worked like a charm. Thank you so much. Had a lot of t-mobile apps that i couldn’t use since i live in another country and this helped me to delete them.

  • Eduardo

    superoneclick has stopped working!!!