How to Root the Samsung Galaxy S2 (Only for International SGS2)

Warning! This post contains advanced android hacking/rooting techniques that are unsuitable for those without prior rooting experiences. Proceeding without proper comprehension might result in bricked devices, unstable roms, and may result in your phone warranty becoming void. The author of this article and the site that hosts the article is not responsible if you cause damage to your phone.

The author of the article recommends at least 1 months? worth of research and comprehension before attempting any rooting procedure. You have been warned.

Who doesn?t love the new features in Ice Cream Sandwich? I am particularly interested in one feature ? Hardware acceleration. This has been one feature that Android badly needed.

The problem? It might take months for you to receive the latest Android updates. That?s why most power users root their phones and install custom ROMs.

ICS custom ROMs haven?t been released, but from experience, custom ROMs are usually updated much faster than the official release. I remember using Froyo (Android 2.2) on the HTC Legend for a few months before they released it officially. To add insult to injury, custom ROMs?typically offer better optimizations, smoothness and benchmarks against the official ROM?? another reason why the custom ROM?community is very active.

Some manufacturers are really bad at what they do ? and they are slow to update ? so why not take things into your own hands, right?

Here?s how to root the International version of the Samsung Galaxy S2.

What you will need:

a)????? International Version of Samsung Galaxy S2

b)????? MicroUSB cable

c)?????? USB jig (optional ? You can buy this easily online)

d)????? Odin3

Before you begin, please note that there are several methods to root the SGS2, this was the one I?ve used. I?m using this method, as it included CWM (and Busybox) that might be necessary to flash other roms or a nandroid backup.

I?m using Chainfire?s method, and it has been working well so far.

Step 1 ? Identifying Your Kernel

Go to Settings > About Phone > Kernel Version.

It?s best if you take a screen shot of your Kernel Version & Build Number. This is important if you need to flash back to stock rom. So, email this to yourself or copy it out of your phone. Don?t ever lose this snapshot.

Click here and locate the version of insecure kernel that you will need.
Download the kernel and unzip it. You will have a TAR file.

For example, my phone is a XWKF1 kernel ? so I download the KF1 version of the insecure kernel.

Step 2 ? Get your phone to download mode

Shut off your phone. Once it is off, hold down the volume down button, home button and power button at the same time. You will see a screen with a Warning Label that will ask you if you want to flash a custom rom or discontinue. Press the volume up button to continue.

Alternatively, you can use the USB Jig to push your phone automatically into download mode.

?Step 3 ? Learning to use Odin3

Get Odin3.

All Samsung phones use Odin3. It is imperative that you learn to use this correctly.

Run Odin3, once it is running, plug your phone into the microUSB slot and connect it to your computer. You should see the Odin3 icon changing colour.

Click on PDA and select the kernel (TAR file).
Make sure repartition is NOT checked.
Click the START button.
Let your phone reboot. Congratulations, your phone should now be rooted.

Step 4 (Optional) Removing the warning symbol during start up.

Shut down your phone and once it is off, plug in the USB jig into your phone.

This can be used to push your phone into download mode. Unplug jig and power off the phone.
The jig resets the binary counter in your phone and removes the warning symbol during start up.

?

Step 5 (optional) Nandroid backup

Once your phone has been rooted, there should be a Clockworkmod (CWM) app in your phone. This is a replacement recovery that lets you flash custom roms, and perform nandroid backup.

Select to reboot your phone into CWM recovery.

ALTERNATIVELY you can boot into CWM manually by holding the volume UP button, home button and power button when your device is turned off (this method is helpful when you accidently flashed a buggy custom rom that doesn?t boot).

Using the volume UP and DOWN buttons, navigate to Backup and Restore. Press the home button to select. Navigate and select Backup to perform a nandroid backup.

A nandroid backup is like windows recovery. It takes a ?shot? of your rom, and acts like a restore point for your phone. It?s useful to get out of buggy rom flashes and is a good way to backup your whole phone before flashing a new custom rom.

If you have any questions, comments or rooting guide requests, feel free to comment below, hit us up on our Facebook page, on Twitter @androidauth, or via our Contact Us page! Thanks!

Source: http://www.androidauthority.com/how-to-root-the-samsung-galaxy-s2-only-for-international-sgs2-28163/

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