Optimum Teco guides - Bose QC35 noise cancelling was gimped by recent software update, claim owners Both generations of Bose's QuietComfort 35 headphones have long been some of the most popular noise-cancelling
![Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news](https://fdn.gsmarena.com/imgroot/news/20/04/bose-update/-535/gsmarena_002.jpg)
Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news
![Bose fends off claims 'noise cancellation-breaking' firmware update was intended for sly sales boost | ZDNET Bose fends off claims 'noise cancellation-breaking' firmware update was intended for sly sales boost | ZDNET](https://www.zdnet.com/a/img/resize/2243cdc984b1284da258113168c160621d6ec554/2019/07/24/771da80a-48a5-42a5-93f9-5f0801c9ba5d/bose-headphones.jpg?auto=webp&fit=crop&height=1200&width=1200)
Bose fends off claims 'noise cancellation-breaking' firmware update was intended for sly sales boost | ZDNET
![How to update the firmware of your Bose Headphones/Earphones, Speakers, etc. on your computer ? - YouTube How to update the firmware of your Bose Headphones/Earphones, Speakers, etc. on your computer ? - YouTube](https://i.ytimg.com/vi/n6Kl1xvcq20/maxresdefault.jpg)
How to update the firmware of your Bose Headphones/Earphones, Speakers, etc. on your computer ? - YouTube
![Downgrade your Bose QuietComfort 35 II from any version to 4.3.6, 4.1.3, 3.1.8, 3.1.7, 2.5.1, 2.2.1, 2.2.0, 2.1.3 or 2.0.1 : r/bose Downgrade your Bose QuietComfort 35 II from any version to 4.3.6, 4.1.3, 3.1.8, 3.1.7, 2.5.1, 2.2.1, 2.2.0, 2.1.3 or 2.0.1 : r/bose](https://preview.redd.it/iepygxkmk6q31.png?width=2838&format=png&auto=webp&s=cb2258be55bdcd1407295b16ae012a41a58ff128)
Downgrade your Bose QuietComfort 35 II from any version to 4.3.6, 4.1.3, 3.1.8, 3.1.7, 2.5.1, 2.2.1, 2.2.0, 2.1.3 or 2.0.1 : r/bose
![Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news](https://fdn.gsmarena.com/imgroot/news/20/04/bose-update/-727/gsmarena_001.jpg)