Chosen Solution
I tried to do a factory reset on my JBL tuner. I plugged into my acer chromebook. Everything was going fine until I was going to eject. I must have clicked in the wrong place , because the usb connection dropped. Now the display shows : " No update file" My speaker will not respond in anyway, regardless of which codes I try. Also it will no longer connect by usb.
Disconnect from the laptop, press and hold 4 buttons at once, {DAB/FM} + {VOLUME-} + {BT}+{VOLUME+}, worked for me.
