Call Bose
If none of these options the fellas above mentioned work, then call Bose. They’re really good at honoring their product I had an A20 with a left speaker issue and I couldn’t figure out what was wrong with it. I then called Bose, sent in my headset and within a week had a brand new off the shelf headset because they couldn’t figure it out. You’ll just have to endure the community headsets for a bit lol