Hello, I'm looking for advice on how and what I need to do to root my GS3 LTE using my MacBook Pro and OSX. I have an unlocked phones, as far as I know as it was bought SIM free, and I want to put the latest Android OS on it. My plan for the future is to install Ubuntu Phone onto it when that becomes available but for now, I want to root it for 4.2.2 or higher. Advice please