I used CF-Auto-Root-milletwifiue-milletwifiue-smt330nu.tar to root my T330 and it worked perfect. SuperSU detected Knox and I guess disabled it (I also freezed some Knox apps with Rom Toolbox Pro) I am also running Wanam Xposed which I guess fakes the system status to be set to Official so I can still get OTA. This tablet is really cool and I bet someone could make TWRP for it. I would be willing to help on anything. I know this thread is really for the 7" but I bet you guys know how to do it (recovery) on the 8" too.