Are u sure all features working? Did u test all features? Can i get some screens from ur ZL? I don't think it should work in Z and ZL because of hardware Compatibility.. It won't work if i am not wrong..
sorry , I edit my post now , its not working, when i clear the dalvik and cache, it didn't restart i also turn on the smartbacklight but unfortunately after I exit to the settings , my phone restarts again