After Bose free updated firmware for itsQC35 II headphoneslast twelvemonth , users quetch on the company ’s forums that the headphone ’s combat-ready noise cancellation had gotten a worse . Now , the identification number of complaintshas ballooned to fill more than 200 pagesin the forum , and even though Bose say its package is n’t the problem , the fellowship is allow user to downgrade their phone ’s firmware .
Issues first pasture up last summertime after Bose relinquish firmware version 4.5.2 for its QC35 and QC35 II phone . While it seems not every user was affected or noticed a change , others complained the update caused a drastic decrease in the effectiveness of Bose ’s ANC tech , with some QC35 II ownerseven sayingthat “ the ANC on high-pitched level is now the same as in LOW . I can not discover any difference when i toggle between them now . The same amount of sounds go through to my ears . ”
of late last workweek , Boseposted a responsedetailing the issue and what it has done to identify and investigate it . Bose says that after exhaustive testing , the company is “ confident that firmware 4.5.2 did not regard the dissonance cancelling feature of speech . ”
Photo: Adam Clark Estes (Gizmodo)
Bose says it get through this conclusion by testing a phone number of headphones using different microcode , inspecting earpiece take back to company , and even sending acoustic applied scientist out to performfive in - family visit . In the end , Bose found that eight of the 10 gimmick it test in - depth were functioning properly . In a numeral of fount where a exploiter complain about ANC not working properly , Bose discovered that affair like third - political party earcups or earcups not being click in properly , apparently causing the perception of frail ANC functioning .
Bose aver that in one only case did its engineers receive a duet of QC35 deuce where there was small departure between setting ANC to high or low , which ended up being triggered by mechanical wrong , most probable from general wear and charge as the proprietor “ note that they did not use the case to store and transport their headphones while exchange every day . ”
https://gizmodo.com/the-best-wireless-headphones-you-can-buy-right-now-1830336665
While Bose say it “ could not attribute any randomness reduction operation exit to the QC35 4.5.2 firmware , ” it says it did learn some things from its investigation and came up with a few solutions on how to address sure issues .
First , to better educate QC35 possessor on how to properly use and sustain their headphones , Bose created a new package ofinstructional videosand document . Second , it ’s update its messaging around updates to more clearly explain the departure between updating microcode versus update Voice Prompts .
at last , Bose will also now allow users to downgrade the QC35 and QC53 II ’s firmware via theBose BTU site , which is an alternative that was previously unavailable .
So while it seems the microcode was not the real cause of degraded ANC performance in the QC35s , at least some good did come out of a nigh yearlong probe .
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