I am trying to use the SuperSU app in my freescale MCIMX6Q-SDP board which is running on Android Lollipop 5.0.2. The AOSP code from git seems to be tightly secured with SELinux Security Mechanism when I googled about the failure of many of the rooting applications which I tried to use,ex: Kingroot,Kingoroot. So through rooting applications ,the rooting process is not possible in AndroidL 5.0.2. Since I cannot afford the consequences of bricking the board ,I would like to go for an expert advice in rooting. Any help would be appreciated.