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Original QC35 still on 2.5.5, should I upgrade? Did they fix the ANC problem with the new firmware? : 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/-1220x526/gsmarena_001.jpg)
Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news
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Bose fends off claims 'noise cancellation-breaking' firmware update was intended for sly sales boost | ZDNET
![Bose QuietComfort 35 II, Wireless Over-Ear Noise Cancelling, Headphone, Triple Midnight Blue (Certified Refurbished) | StackSocial Bose QuietComfort 35 II, Wireless Over-Ear Noise Cancelling, Headphone, Triple Midnight Blue (Certified Refurbished) | StackSocial](https://cdnp0.stackassets.com/ba751f3a86a502583aa65b417266363566bfaea5/store/6812e0af63699fe291723d8908e84bf4cf891532d2e6341490ed925b549d/image_processing20220823-72-750lcy.jpg)
Bose QuietComfort 35 II, Wireless Over-Ear Noise Cancelling, Headphone, Triple Midnight Blue (Certified Refurbished) | StackSocial
![Amazon.com: Bose QuietComfort 35 (Series II) Wireless Headphones, Noise Cancelling, with Alexa voice control – Limited Edition Triple Midnight : Electronics Amazon.com: Bose QuietComfort 35 (Series II) Wireless Headphones, Noise Cancelling, with Alexa voice control – Limited Edition Triple Midnight : Electronics](https://m.media-amazon.com/images/I/71jeeY9g9KL.jpg)
Amazon.com: Bose QuietComfort 35 (Series II) Wireless Headphones, Noise Cancelling, with Alexa voice control – Limited Edition Triple Midnight : Electronics
![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
![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)