I've a Samsung Galaxy s2 GT I9100. I'm running Android 4.1.2 with Samsung's original ROM. I've rooted the phone successfully. I have been living in Nepal for years. Samsung's Kies software reports that the ROM is for Nepal (if I understand correctly). Fine. Now I am moving back to the USA. Do I have to load a ROM with a country setting for the USA? Or not? What difference would it make if there is a ROM for the USA (which I have not been able to find anyway)? Finally, I'd like to move up to Android 4.4.2. I've found instructions on how to do it. Do I have to change the current ROM from Nepal country to another country first? Or does it make no difference? And I suppose if I successfully manage that, I will not necessarily end up with a ROM for the USA -- but then maybe I don't need that anyway, per the previous paragraph. Thanks for any tutorial on these issues that you can provide.