Rooting Samsung Galaxy S2 with Latest Original KE8 Firmware & Kernel-Step by Step guide

Samsung India Launched Samsung Galaxy S2 with a new firmware KE8. Uptil now KE7 was the latest which fixed several issues like Pink Camera Spot & Lockscreen Delay issues. Read more about it here. Indian version came pre-installed with KE8 firmware and seems to be have solved Android Resource bug which caused a lot of battery drain. It also seemed to have tuned the banding on Gardient images and is less visible now. Although, Both KE7 & KE8 are compiled on the same date, we would still like to be on the latest firmware.
And people with Indian SGS2 who flashed CF Rooted kernel and then KE7 kernel experienced a lot more battery drain. So, we could assume that the latest KE8 kernel have improved the power management and performs a bit better. Rest depends on your tests. Do let us know how it performed for you.
Well the Indian Version of Samsung Galaxy S2 has,
Build Info – Wed May 18 13:55:45 KST 2011

Warning : You must understand that rooting requires flashing and if not done properly might brick your phone and render it useless. It might or might not break your warranty. You should take responsibilty of what your are doing to your phone. And if you don’t understand anything, do ask us in the comments section and make sure you understand each part of it completely before you flash your phone. Read the whole tutorial completely and make sure you understand everything before proceding.

Step by Step guide to Root Samsung galaxy S2 with CF Root & Latest & Original KE8 Kernel

You’ll Need :
[ad] – Odin3 v1.85 : Download

CF Root for SGS2 v3.6 with CWM3 ( XW_XEU_KE7 Kernel ) : Download

KE8 Kernel : Download

KE8 Kernel zImage File : Download

Odin3-v1-85-download-Step by Step guide to Root Samsung Galaxy S2 with Latest Original KE8 Firmware & Kernel

Step by Step guide to Root Indian SGS2
– Extract the to get CF-Root-SGS2_XW_XEU_KE7-v3.6-CWM3.tar. ( Do not Extract this dot tar file to get the zImage )
– Extract Odin3-v1.85( both exe & ini file ).
– Run Odin3-v1.85 with administrative permissions by right clicking on it and running it as an Adminstrator.
– Select PDA checkbox and click on the PDA button.
– Now browse to & select CF-Root-SGS2_XW_XEU_KE7-v3.6-CWM3.tar that you just extracted in the first step.
– Now turn off the phone and start it in download mode by pressing & holding Volume Down Button + Home Button + Power Button simultaneously.
– Connect your SGS2 to computer using USB cable.
– You’ll see connected and COM Port info in the Left side of Odin3 ( top left & bottom ). If it doesn’t show, your phone is not recognized and perhaps the drivers are not installed.
– Just make sure Repartition is NOT checked.
– Click on the START Button & wait for the falshing to complete.
– If everything went fine you’ll see a sucess message in the message window on the bottom left and your phone will reboot.
– Your phone is now rooted. 🙂

But wait, you still need to flash the original KE8 Kernel back. ( I already told you the benifits of KE8 kernel! ) And don’t worry, you won’t loose CWM after flashing the original kernel. Plus, this will also remove the Yellow exclamation triangle with a warning at the boot up. But it does NOT reset the custom kernel flash counter. You’ll need the KE8 Kernel zImage for this and this time you need to extract the zImage from dot zip file. Don’t get confused with the CF Rooted kernel and KE8 kernel.

Download Mode in SGS2-Step by Step guide to Root Samsung Galaxy S2 with Latest Original KE8 Firmware & Kernel

Flash Stock KE8 Kernel to remove Warning triangle at the Boot Up :
– Extract KE8 Kernel zImage to get the zImage file.
– Put the zImage file on the root folder of Internal SD Card. ( do not put it inside any folder of Internal SD Card. )
– Repeat the steps for flashing the kernel with Odin3 but with SamsungGalaxyS2-KE8kernel-zImage.tar file instead of CF-Root-SGS2_XW_XEU_KE7-v3.6-CWM3.tar.
– After rebooting your phone, go into CWM and select Flash Kernel, and select the zImage from KE8 kernel you previously put on your SD-card. The kernel will flash and the device will reboot.
– The Yellow Warning triangle will not be shown anymore, but you’ll have CWM. And in future if you select to flash your kernel with CWM Flash Kernel Option, it won’t increase the custom kernel flash counter.
– Enjoy your Rooted Samsung Galaxy S2 with latest KE8 kernel. 🙂

If you have any questions, do ask us in the comments section. Rooting will help you make a lot of things possible on your SGS2. We will discuss the benifits of rooting in another post. And if you have any other question regarding your Samsung Galaxy S2, don’t forget to ask us. And do join us on Facebook & Twitter. 🙂

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10 thoughts on “Rooting Samsung Galaxy S2 with Latest Original KE8 Firmware & Kernel-Step by Step guide

  1. hi there manish…

    thanks for your guide…

    I got sgs2 two days back from technovision hyderabad
    this phone already has KE8 firmware that means this is the latest update till now…correct me if i am wrong


    So i assume i dont need to flash it using above method.

    But i need to root my device for custom roms
    How can i root this sgs2 and which version i should use for SuperOneClick version 1.9.5 or 1.5.5 and which insecure kernal i should use
    If you can provide a link to both of the above files and a quick tut that will be very nice of you


  2. I can´t get pas this point!
    Odin v.3 engine (ID:3)..
    File analysis..
    Get PIT for mapping..
    Firmware update start..
    Now if you say internal sd card, I suppose you just mean the phone´s memory right. Any idea why I can´t get passed this point. Is it because my phone is Dutch or something?

  3. After flashing SamsungGalaxyS2-KE8kernel-zImage.tar file instead of CF-Root-SGS2_XW_XEU_KE7-v3.6-CWM3.tar. how you, go into CWM and select Flash Kernel, and select the zImage from KE8 kernel you previously put on your SD-card. The kernel will flash and the device will reboot.

  4. HI im trying to flash SamsungGalaxyS2-KE8kernel-zImage.tar file, and the odin stuck on zimage
    and near the webcam come hot, so a disconnected the usb odin say fail and i turn on my phone and boot normals with KE7
    any idea to resolve my problem, im new in android

    1. Yes it get stuck on zimage line.
      You just need to unplug the phone from the usb, you will get errors messages of course.
      Press and keep press the power button on the phone to get off.
      Then start on your cellphone, wait for total boot up, go to applications and find CWM (start it and accept su rights), go to flash kernel, you will see the file, select it, choose flash and done. The cellphone will reboot.

  5. I’ve flashed my sgs2 with xwke8 firmware with the miui rom after rooting it with chainfire root kernel. I want to revert back to the stock rom. Can u plz. tell me how to do that and where can I find the stock rom based on this firmware? Thanks in advance for ur reply. 🙂

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