回答“Flip 4 buzzing noise and blinking light with with 'bassy' music”Hello Miguel. Sorry for the late reply. I had pretty much the same problem as you. Once I turn up the volume beyond 1/4 or 1/3 it would start to distort, the lowest battery LED would blink red and a short while later it would shut off itself. This problem was solved by replacing the battery. Good luck. I'd did not upgrade the software as one review mentioned a slight decrease in the bass after the update and I did not want to decrease my bass..