This always annoys me. How can a device you have purchased outright with certain functionality, have the terms of service changed after the point of purchase which then changes that usage of the device.
This seems like you could return for refund as the device is NOW not what you originally purchased.
Where does this end? We buy a car then 5yrs later they change the terms of service and if you don't agree you don't get the right to have tires on your car.