How to Unroot the Samsung Galaxy S2 Plus (GT-I9105)

So you have rooted your Samsung Galaxy S2 Plus (GT-I9105) and now want to unroot it? No problem, you’ve come to the right place to get the exact info you’re looking for. There could be various reasons for unrooting your device, maybe you’re sick and tired of using a rooted device or you just want to get your warranty back. Either way, this guide will help you unroot your device and get it back to stock. So, here you go:

I. Before You Begin:

1. You should have rooted your device using the procedure given here.

2. Your device needs to have at least 70% of battery life left.

II. Downloading Required Files:

1. Stock Firmware (Download the appropriate firmware for your device)

2. Odin

III. Unrooting the Samsung Galaxy S2 Plus (GT-I9105):

1. Place both the files you downloaded to your Desktop.

2. Extract files from both the archives to your Desktop.

3. Double-click on the Odin executable file and it’ll launch.

4. Hit PDA and select the Stock Firmware file you just extracted to your Desktop.

5. Put checkmark in the boxes that say Auto Reboot and F. Reset Time.

6. Make sure that the Repartition box isn’t checked.

7. Turn OFF your device.

8. Reboot your device into Download mode. To do that, press and hold the Volume DOWN+Home+Power buttons together.

9. Press the Volume UP button to continue to Download mode.

10. Connect your device to your PC using the USB cable.

11. Hit Start in the Odin and it’ll begin flashing the firmware.

12. Once the flashing’s done, your device will automatically reboot.

13. And you’re all done!

Brilliant! You’ve successfully unrooted your device and it’s now running the official stock firmware. This firmware doesn’t have any customizations and is pure and original from your manufacturer.

If this procedure helped you please thank/donate to the original developers here.

If you need help with this procedure, please ask in the comments below or in the forum.

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.

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  • This is very effective way to unroot Samsung Galaxy S2 i9105. I tried to unroot my device and it works fine. Thanks man for helping me on this issue…

  • abdulaziz b

    Thanks for helping me to know how to unroot my device

    • Mahesh Makvana

      You’re welcome! That’s what we are here for!

      • Ma’in

        Mahesh makvana I didnt proprly root my device but downloaded king user and its now a system app and play store has disappeared can you help me
        bring my phone back to its original position

  • riswan adam

    I was updated my s2plus to 4.2.2. but Im not satisfied about it. I want my previous original 4.1.2 firmware. Its that possible by this type of rooting.?

  • Christoph Fritzl

    thanks very much,worked great!!! 🙂

    • Mahesh Makvana

      That’s great! We’re glad it helped you!

  • Mahesh Makvana

    Hey Julia,

    Thank you for your feedback about the procedure, we appreciate it. Yes, we always try to come up with working methods that can really help people unlock their devices’ true potential.


  • Gerhard

    hello theunlockr, i unrooted my galaxy s2 plus. But when I start my samsung it starts, but it only show the samsung logo. How long it starts, when the unroot finish?