How To Root AT&T Samsung Galaxy S II [ODIN Method] [Guide]

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In case you opted to go for an AT&T Samsung Galaxy S II and are now waiting for root, then your wait is over! Development for AT&T Samsung Galaxy S2 kicked off as soon as the phone’s kernel source was made available. And the results so far have been awesome! Developers have not only managed to cook a custom stock kernel with root, but there are couple of popular ROM ports available for flashing. Senior XDA Member and Android Developer, Entropy512, released a stock and pre-rooted kernel packaged in stock system image. Flashing this System Image will not only give you root access on your phone, but will also unbrick your device if your flashed a bad PIT file earlier.

Here is the step by step guide to root AT&T Samsung Galaxy S II with modified kernel:

Requirements:

Instructions:

Disclaimer: Please follow this guide at your own risk. AddictiveTips will not be liable if your device gets damaged or bricked during the process.

  1. The first step is to download KIES and install it on your computer. This will install the required Galaxy-s-IIdrivers on your PC for ODIN to work without issues.
  2. After you are done with downloading KIES and installing it on your PC, download ODIN from link provided in Requirements section.
  3. Now unzip ODIN zip folder [You will need 7zip to extract this archive], make a new folder named ODIN on your desktop and copy the extracted files to this folder.
  4. Once done, download the System Image zip file from here, extract PDA.tar and copy it to ODIN folder on your desktop.
  5. Now click on Odin3 V1.85 to launch the application.
  6. Power off your phone completely and reboot it whole holding volume down button simultaneously with home and power buttons.
  7. After you are in the download mode, connect your phone to the computer via USB cable that came with your phone.
  8. You should now see COM 20 port highlighted with yellow in ODIN application windows. Only leave Auto Reboot checked and uncheck all other options.
  9. Now click on PDA tab and select the PDA.tar file you downloaded and copied to ODIN folder earlier.
  10. After you have selected the file, click on Start.
  11. Now sit back and relax while ODIN flashes this kernel on your phone.
  12. After the procedure is complete, your phone will auto reboot.
  13. In case your phone ends up in a bootloop after flashing the .tar file, reboot your phone in 3e Recovery and do Wipe / Data factory reset.

If you are facing any issues, then head to the XDA thread for live developer support.

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  • nerdyjim

    What is the difference between entropy512’s pre-root stock/kernel package and the clockworkmod/super one click method’s? If I flash the pre-root stock kernel package, can I still install Clockwork Mod Recovery? If so, how? Sorry for the newbness, this is my first android and root them is kinda different than the iphone jailbreak method’s. Thanks for any help!

    • James

      No answer?

  • gmf

    Thanks for this – i’ve been fighting the no-CDCs-driver issue on my netbook all morning.

    This method is the way to go – hands down.

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  • alex

    When i try to unzip the image with 7-zip i get an error.

  • alex

    never mind i was trying to extract the wrong file lol

  • Jason

    THANK YOU!!!!! You saved me!

  • karlthetruth

    THANK YOU!!!! Took all of 5 minutes to root my phone after downloading everything. I like the fact that my phone still looks stock but I can do anything to it.

  • Dave DeSanto

    Are these drivers okay for windows 7? Vista? 32, or 64???

    Without nowsing what OS the drivers are for im worried im going to brick the phone

  • Calvin

    How do I download the PDA.tar??