Hi all, I had a similar issue with my Bose Soundlink Mini II speakers and I went in to a couple different Bose stores to ask for a fix. In one of the stores, the lady said they had recently received a lot of queries for this issue with the Soundlink Mini II and suggested DOWNGRADING the software to see if that worked. I did so and to my surprise it worked and so I have not since updated it to the lastest software version. To downgrade the software, plug in the speaker to a computer/laptop and go to the software version page on the Bose website. Then, press:
ADV *up arrow* *down arrow*
all together at the same time. I downgraded mine to version 1.1.3 and it has worked ever since. Hope this works and saves you some cash!