I am using an android phone for the first time this year. I have the Galaxy I337. I decided to root it which worked well. I then tried to flash the rom without backing up the stock accidently. Now KitKat is out for my phone and when I try to update it will not allow it. It stops at 25 percent when installing it. I believe it's because I am rooted and running a custom rom. When I go into the boot screen I receive a no command error with the green android guy. How do I go about bringing my phone back to the way it was out of the box. I really want KitKat.