Anyone been able to update the firmware on these? Win10 x64 doesn't seem to recognize the USB device to run the burn tool. I've had a single for months and love it. Just added a second for stereo and there's some kind of pop sound happening when streaming bluetooth to the stereo setup. Hoping the firmware update cleans that up. But struggling to update it. Single has been perfect. Hoping stereo gets worked out and these things rock the way I hope they do!