Bluetooth stopped working on our 6200-NEX a couple of months ago.  My husband was on a trip when it stopped working and tried to update the firmware without a file.  LOL  Now, firmware version shows --------.  Attempts to update fails and shows "Error"   All bluetooth options are grayed out except for the "update software" option.  I have ordered a replacement internal SD, but it will take a while to arrive.  Does anyone know the model number of the bluetooth module in case it is a hardware issue?  I have not been able to identify it online, and don't want to disassemble the unit until the SD card is in hand.