Ok so I just got a used s3 that I plan to activate on Ting. I have been reading all this stuff about knox and I am very confused. I am also new to the whole rooting/custom rom scene. So if you don't mind, I would like to ask a few questions. 1. So I take it that the point of installing custom roms is so you can always be updated to the latest version of Android once Samsung stops giving the s3 updates? 2. I'm currently on 4.1.2. I if I use the OTA update to 4.3 will I be stuck and unable to lets say get a custom version of 4.4 on my phone? 3. Basically I want to know if I am better off learning about roms and such and installing custom operating systems instead of taking the 4.3 update?