Bose is now visiting customers at home to figure out QC35II noise cancellation problems - The Verge
The Secret Bose QC35 Series II Hardware Update - YouTube
My new Bose Qc 35 II. I have tested both this and sony XM4 and gone with Qc35II.So much happy specially with 4.8.1 firmware. I wonder it is competing with 2020 XM4
Bose QC35: update did not interrupt noise cancellation - Somag News
Bose QuietComfort 35 II review - SoundGuys
With Bose, users can downgrade the QC35 firmware after months of complaints – NewsBeezer
Bose QuietComfort 35 II vs Sony WH-1000XM4 - SoundGuys
Bose Updates The QC35 II –Possibly The World's Best-Selling Noise-Canceling Headphones
How to upgrade Bose QuietComfort QC35's firmware on iOS ? - YouTube
Why you should update your Bose QC35 to the latest firmware update
How to downgrade your Bose QC35 / QC35 II with firmware 3.0.3 / 4.5.2 - YouTube