How to Root Samsung Galaxy S II

Galaxy S II - (I9100)

Overview

The successor to the Samsung Galaxy S – the Galaxy S II – is a beast in every terms. The handset blows every handset out of the water in terms of performance, and yet, maintains a waistline of only 8.49mm. Without a doubt, the Samsung Galaxy S II is the best Android of 2011.

Rooting Guide

Please read this before rooting your Samsung Galaxy S II-

After flashing a custom kernel on the Samsung Galaxy S II, a small exclamation mark will be shown every time the phone is rooted. This happens because the Galaxy S II has a custom counter, which keeps a track of how many times a user has flashed a custom kernel on his phone. The only way to remove this exclamation work is to use a USB JIG, which resets the custom counter to 0.

 The guide below will work for Galaxy S2 running either Android 2.3 Gingerbread or Android 4.0 Ice Cream Sandwich. 

Here are the steps to root the Samsung Galaxy S II (GT-I9100) -:

  1. First of all you need to download all the required files. You will need Odin, the required drivers and the pre-rooted kernel. Odin can be downloaded from here, while for the drivers users need to install Samsung’s KIES software. It can be downloaded from here.

  2. The pre-rooted kernel – CF Root – can be downloaded from here (Post # 3,4, 5, 6, 7 and 8). The latest version of CF Root can always be found over at this thread on XDA forums. Download the CF-Root kernel depending on the firmware installed on your phone. You can check the firmware version from under Settings-> About Phone. Make sure the last 3 characters of build number match the CF-Root version you are downloading.

  3. Switch off your Samsung Galaxy S II, and boot it into ‘Download’ mode. To do so, press the Volume down button + Home button + Power button simultaneously. The phone will warn you about booting into Download mode. Press the volume up button to continue.

  4. The phone will show a warning that flashing a custom OS may harm the phone. Just press the Volume Up button to skip past the screen.

  5. Once the phone boots into the Download mode, it will show an Android logo with “Downloading…” written below it.

  6. Now fire up ODIN on your PC, and connect your phone to it. Once your phone is detected by ODIN, it will display a COM port highlighted in Yellow color.

  7. Then Click on PDA, and select the CF-Root kernel. Keep in mind that the CF-Root kernel must have an extension ending with .tar. It might very well be possible that the tar file is inside a zip or rar file.

  1. Then press the ‘Start’ button in Odin, and wait for it to flash the kernel on your Galaxy S II. The flashing process will take around 3-5 seconds to complete. Once the flashing is done, your phone will automatically reboot.

  2. You have now rooted your Samsung Galaxy S II with a custom recovery (ClockWorkMod) installed, as well.

  • JustMe

    What are the possible problems with this operation.
    Also will Samsung be releasing Ice Cream Sandwich at a later date.
    Cheers
    JM

  • http://www.amarjits.com Amarjit Singh

    gr8 work….thanx

 
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