I love my Bose QuietComfort 35 Headphones.  Today I realized I have had my headphones for a while, but haven’t updated them in a very long time.  I was on version 1.2.9 (i believe) and now I am on version 2.5.3.  Just needed to go to https://btu.bose.com to download Bose’s latest updater.  The new software is actually making a [positive] difference.