Bose Mini Soundlink II – empty battery fix

By | November 3, 2017

The Bose Soundlink Mini II, one of the best bang-for-the-buck purchases I’ve ever made (along with the Dyson V8 Absolute) finally started to show its age.

I got the dreaded charging warning!
The battery should last far longer than a year, so my issue was likely with the firmware. It was the latest version, so I had to experiment.

What ultimately seemed to fix the charging issue was to downgrade the firmware, reset and reboot the Mini, then upgrade the firmware again!

Here’s how;

1, Connect to http://btu.bose.com
You might have to download the little updater software which will then prompt you to connect the speaker.

2, Once your speaker is connected and it shows you what firmware you have installed, and eventual updates, press the following keys in sequence on the keyboard
[a] , [d] , [v] , [up arrow] , [down arrow].

This will unlock the “advanced menu” which allows you to downgrade your firmware.

Downgrade firmware

At this point, try to charge the speaker fully overnight and see if that worked.

This worked for me. Once the speaker was charged, I updated to the latest firmware again and it’s been good ever since.
If it does NOT work, then update the firmware to the latest version and try again and that should do the trick.

3 thoughts on “Bose Mini Soundlink II – empty battery fix

  1. soe

    now I downgraded and tried to re set and re boot but I did not see ant light on it , also now I,m charging the mini , still do not see any light on it. Is it normal or not?

    Reply
  2. Al

    Hello i’d like to request for an assistance on fixing my SLM 2. I had executed the above mentioned steps but i got stuck during pressing a,d,v, arrow up and down. After pressing, it seems like there is no drop down menu for me to select the firmware version. It just shows off the advance menu and system info.

    Got my bose approximately 4 months wen it enters in this state.

    Thank you.

    Reply
    1. reverend

      What software version does it show? It should give you an option to update yours if it’s not already updated. It’s been a while since I did this so I don’t remember – did you have to click on the “Advanced” button for it to give you the update/downgrade options?

      Reply

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