The thread (above) says it's deprecated but there is a vivid discussion about TWRP 3.1.0-1, rooting with modified Chainfire's SuperSU and stuff (AdAway, BusyBox, Viper4Android), etc. in:
unroot method is flash magisk uninstaller or unsu unroot with factory reset is bootloopI've been using the phh root and it's been perfect. But recently I tried to install Magisk Manager to mess around with some things, but I found out that it's gonna install another superuser (MagiskSU). So is there a way to unroot p9 without factory restoring it? I'd also like to know before I do anything if it is possible to use a different superuser like Magisk or even SuperSU in the nougat p9 version.