Hi All, I am using Samsung Galaxy S Plus (i9001). I want to install Jelly Bean 4.1.2 in my i9001. Can anyone please help me step by step to do that ?? I know I have to root my device. But I am not sure how to do this and where I can find the Jelly Bean 4.1.2 software for my device. Can anyone please help me to do this ?? Thanks in Advance.