![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 shouts down claims that it borked noise cancellation firmware to sell more headphones • The Register Bose shouts down claims that it borked noise cancellation firmware to sell more headphones • The Register](https://regmedia.co.uk/2020/04/06/bose_qc_ii_anc_headphones.jpg)
Bose shouts down claims that it borked noise cancellation firmware to sell more headphones • The Register
![Bose QuietComfort 45 vs. Bose QuietComfort 35 II: Which Bose noise-cancelling headphones are better? | Laptop Mag Bose QuietComfort 45 vs. Bose QuietComfort 35 II: Which Bose noise-cancelling headphones are better? | Laptop Mag](https://cdn.mos.cms.futurecdn.net/Zk2MSnXDycKiRjPdTTS8mM.jpg)
Bose QuietComfort 45 vs. Bose QuietComfort 35 II: Which Bose noise-cancelling headphones are better? | Laptop Mag
![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 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](https://i.redd.it/duvazevrqee61.jpg)
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 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/18/10/bose-sony/-728w2/gsmarena_011.jpg)
Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news
![Bose QuietComfort 35 review: The best overall active noise-canceling wireless headphone to date - CNET Bose QuietComfort 35 review: The best overall active noise-canceling wireless headphone to date - CNET](https://www.cnet.com/a/img/resize/d5c16834c43fa79890633c544ecdcad8d00aeec4/hub/2016/06/17/a4c37914-1e65-444f-859d-16f69c6fe4a5/fd-bose-quietcomfort-35-10.jpg?auto=webp&width=1920)
Bose QuietComfort 35 review: The best overall active noise-canceling wireless headphone to date - CNET
![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)