Bose QC35 update on the way, with only two visible changes - 9to5Mac
Bose Lets Users Downgrade QC35 Firmware After Months of Complaints
How to fix problems with Bose QuietComfort 35 II - SoundGuys
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
Amazon.com: Bose QuietComfort 35 II Noise Cancelling Bluetooth Headphones— Wireless, Over Ear Headphones with Built in Microphone and Alexa Voice Control, Silver : Electronics
Updating the software or firmware of your product - Bose SoundLink® Mini Bluetooth® Speaker II