I have the same problem, except I upgraded my firmware months ago and now all of a sudden ,out of the blue the bluetooth stopped working and it is not showing any bluetooth firmware, I also tried to reinstall the 2.003 firmware from the same micro SD card I used for both my 920 units and it will not do anything , Called pioneer and they say to send it in ? This may be and end with pioneer products, very unhappy consumer. It should be no problem to reinstall, but then again it should have never just disappeared. Any other thoughts