I have a UE megaboom.
It is a “demo” model and hence has bluetooth disabled.
I have tried factory reset (Minus, and power button for 15 secs)
I have tried hard reset (Minus,Plus, pairing button for 15 secs)
When I try to update software with the UE speaker update assistant on windows, Windows cannot detect my device - “USB device not recognized”, and then the update assistant cannot proceed.