Root Samsung Galaxy S-II (I9100G)

Have you decided to install custom ROM on your galaxy device??...Well!!....nice decision..

So here's a tutorial on how to make it easier and hassle free...

First of all to install Custom Rom you need to Root your Device. Rooting Device means to give super user permission so that programs/applications can access root.

Before Starting with this process i would recommend you to note down your latest OS kernel. To get kernel Version go to "Setting" then "About Phone" option. There you would see kernel  version. Note down this kernel version. Although we won't be using this anywhere in whole process. But it is safe to note it down somwhere.....

Requirement

• Samsung Galaxy SII I9100G (Make sure that version is same. You can verify same from "About Phone" option in "Settings" )
• Laptop /PC (Win XP/7 Preferably)
• USB Cable
• Root_S2_i9100G File
• Odin 3 v 1.85
• Samsung Kies  

Follow These Steps to Root it...

Install Samsung Kies in your PC (it not installed). After installing kies connect your phone to Kies via USB cable. This is to make sure that all required drivers are installed successfully. Disconnect Device from PC after this step.

Power off your Phone. Phone should completely be off .Wait for 1-2 minutes after it is completely off.

Now Start Device in Download Mode by pressing Volume Down Key, Power Button and Home key simultaneously.
                                                        

            Press Volume up Button to enter in Data transfer Mode (At this time if u feel like quitting the  process  then just press power button for few seconds. Phone will Reboot Automatically)

       

        Start Odin in PC by clicking odin3 v1.85.exe and connect Phone to PC.In Odin at ID:COM  it should appear the USB cable as connected(COM1,COM2 etc) .Yellow Bar with something as COM shows that the device is recognized.

   

Auto Reboot and F.Reset time check-boxes should be checked in Odin window Rest all check-boxes should be unchecked. (As shown in above screenshot)

Click on PDA command button and select Location where Root_S2_i9100G File was downloaded in PC.

Click Start and Have coffee (or tea) till Odin shows "Pass"...

Congratulations!!....

You Successfully Rooted your  Device... :)

Restart Device and to check if device is successfully rooted  download app named "Superuser" from Play Store... It will check and will inform you if device is rooted or not...