I recently got a z2 and it is currently rooted I was unable to unlock my bootloader. When I checked in the settings it said no to the unlockable bootloader. I am interested to know, can you flash the twrp onto a z2 with a locked bootloader and how to do it? I know you could on the z1. If I cannot flash twrp with the bootloader locked does anyone know how to unlock it if it says it's unlockable?