How to downgrade your Bose QC35 / QC35 II with firmware 3.0.3 / 4.5.2 - YouTube
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BOSE QC35 II 4.5.2降级4.3.6 官方方法指北_头戴式耳机_什么值得买
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Bose QC35 II owners complain of degraded noise cancellation after recent updates - The Verge
Bose denies firmware fried ANC on QC35 headphones but will allow downgrades
Have Your Bose QC35s Been Sounding Weird? You're Not Alone (and There's a Fix)
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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
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How to downgrade your Bose QuietComfort 35 II from 4.5.2 to 3.1.8 : r/bose
Bose Now Lets You Downgrade Firmware of QC 35 If You're Facing ANC Issues | Beebom
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