There is no one definitive answer to this question, as the process of opening a VoiceOver rotor can vary depending on the specific model and installation. However, some tips on opening a VoiceOver rotor may include using a plunger to pry the cover off of the rotor, using a heat gun to melt the screws that hold the rotor together, and using a hammer and chisel to pry the screws out of the rotor.