Optimum Teco guides - Bose QC35 noise cancelling was gimped by recent software update, claim owners Both generations of Bose's QuietComfort 35 headphones have long been some of the most popular noise-cancelling
Bose disproves conspiracy theories regarding reduced noise canceling performance with QC 35 II update - GSMArena.com news
Bose QuietComfort 35: Downgrade der Firmware ab sofort möglich
GitHub - sunzj/Way_of_Downgrade_BOSE_QC35ii: How to downgrade bose QC35 ii firmware
QC35 series 2 - Did bose ever resolve the firmware update/anc issue? : r/ bose