Getting Android 4.3 on Samsung Galaxy S2 GT-i9100 -- Part 1

Part 1 - Rooting Your Phone

Galaxy S2 GT-i9100

All the people who have Samsung Galaxy S2 with them will not be getting an update to Android version 4.3 Jellybean from Samsung Galaxy S2 GT-i9100. But you can always flash the Jellybean firmware by flashing the firmware manually. After flashing you may not get the look of Samsung phone, but you will be having the latest firmware running on your device with the looks of Google Nexus. And its really worth it, as you get all the features of latest version of Android. But the downside is, your phone would be Rooted.

Information:
The method below is also applicable to many other Samsung phones like S3, Note, Note 2 etc. except for the download links I've provided, they are different for every phone.
I am not responsible if any damage happens to your phone. You do these steps at your own risk. 
Rooting Samsung Galaxy S2 GT-i9100
Requirements:

• Samsung USB Drivers - Get them here
• Odin - Flashing Tool - Get it here
• Rooted Kernel File - Get it here Get the ".tar.md5" or ".tar" file for Odin (PhilZ Kernel with CWM Recovery)
• Samsung Galaxy S2 GT-i9100, Battery level atleast 50%
• USB Debugging enabled on the device. Go to 'Settings -> Developer Options -> USB Debugging'

How-To Flash the Kernel:

• Switch Off your Phone
• Start Odin v3.xx or v1.85(With Administrator rights on Windows 7)
  
  
  
• Go to Download mode on your phone(Pressing Volume Down+Home+Power keys simultaneously)
• Connect your phone to Computer via USB cable
• You'll see a yellow indicator lit up on Odin after the phone is connected, which means phone is connected properly
  
• Click on PDA button, select the ".tar.md5" or "tar" file of the kernel you downloaded earlier.
  
• After all the above steps are done, Click on START.
• Once completed flashing, your Phone will automatically reboot.
  
• Congratulations, you have successfully rooted your phone.