Take a look at the Bose site. They should have firmware notes
I'm at home now and after I get cleaned up, I'll update my QC-35 headset. Thanks again for the tip, Spencerdl.
I have:
B&W P5
Sony WH-H900N
AirPods
Yamaha model I forget
Some old Koss
The Sony's are new and so far are making me happy and believing you don't have to buy Bose for good noise cancelling.
The B&W are not active noise cancelling but very nice neutral sound, superb build, and just nice items.
As for AirPods.... Isn't there a rule that says you just need to shut up and buy them if you have an iPhone?
I'd have to say I don't like that rule. I upgraded my list to BeatX. Finally broke down and went wireless though I still have my Thinksound buds and the dongle for when I don't need wireless convenience. The BeatsX give me the W1 functionality of the airpods but I don't have to worry I'm going to lose one or both buds and they fit my ears a lot better. Especially after replacing the tips with some nice Comply foam tips.