Hello you wonderful people. I've been looking all over for how to upgrade a Straight Talk Samsung Galaxy SIII SCH-S960L to KitKat 4.4 (or better) from 4.1.2. Even here I've not found much. I don't know anything really about rooting and flashing phones, though I am familiar with updating firmware on other things. As I understand it, I need a new ROM for this phone, and nobody has one. Is that right? I've also seen that I can use a basic Sprint ROM for a similar phone and change some settings, but I can't seem to find more than that. Once I find out it's possible to do, I don't mind digging further into how it's actually done. Can anyone point me in the right direction or give me the best idea on what to do?