With the forum closing, I am trying to gather all the headphones and speakers firmware posts that are upgradable via btu.bose.com together to be archived. I made this post on the Around & On-Ear Headphones board (sorry not in the Sleepbuds, board). So please check and see if you have seen any that are missing. If you do find any, please can you include them in the comments of that post.
Thanks 🙂