They could remove UHD support, but I don't see why they would do that with a 211 series firmware, because the 211 series drives are UHD drives. They even say so on the front. Sure they could implement a better drive detection in the firmware that would have UHD support on real 211 series drives only, i.e. not on 208/209 series drives with 211 firmware anymore. But to remove a feature people paid for from drives that come with UHD support out of the box would be a serious issue that could lead to Pioneer getting sued.
|