On Friday, January 18, 2019, we are releasing new firmware for QC35 Series I wireless headphones. This update is available through the Bose Connect App, the Bose Updater Site (btu.bose.com) and will be cut into manufacturing at a future date.
Release notes:
QC35 Series I:
- Improvement to the connection/disconnection and low battery tone volumes
- Bug fixes and improvements
Product Previous Firmware Versions New Firmware Versions
QC35 Series I 2.5.3 2.5.5