Hello, I'm looking for a place to download a stock firmware for the SM-N920A. Preferably Android 5.1.1. I'm going to attempt to root my device and if I mess it up I'd like to be able to restore it. Also I know that flashing stuff may permanently void my warranty and screw up Samsung pay but will this brick my device forever? I'm basically asking if a stock firmware would be useful or not. I've heard some places that KNOX still won't allow the phone to boot after an odin restore to stock. Thanks for the help.