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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
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Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news
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Bose shouts down claims that it borked noise cancellation firmware to sell more headphones • The Register
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Bose QuietComfort 35: Firmware-Update soll ANC-Qualität doch nicht beeinträchtigt haben - Notebookcheck.com News
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