Hello Everyone, I have just bought the Micromax A57 Ninja 3 phone. It comes with Gingerbread 2.3 OS. I would like to upgrade from 2.3 to 4.0 ICS. Can anyone let me know is it possible, if yes then how? I also would like to take a backup of my contact list. Is there any way to do the same? Thanks for your help in advance. Looking forward to hear from soon.