How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

This is Guide to install official ICS Rom on 2011 and 2012 Xperias

Flashing your mobile is at your own risk,flashing may void your warranty and SONY would be in no way responsible for any damage.

How to root android 2.3 with only a few steps

What is rooting? Rooting your Android phone enables you to use the Superuser so that you are the administrator of your Android device, and you can control your device totally about the system.