All of the sudden my Soundsport Free earbuds make a chime when they enter sleep mode. They didn't used to do this. The primary way I used these is for going to sleep. I play an audiobook for 15 minutes and then it automatically stops playing. This has worked great for about a year. Recently (possibly caused by last firmware update of my buds), however, I get a loud bluetooth disconnect sound when the buds go to sleep waking me up with a start. This has rendered my Bose buds worthless to me. Can anyone tell me how to disable this again? Can I back out the last firmware update somehow? Don't know if this is relevant but using with an iPhone running iOS 13.2.3. Thanks.