Blackwire C420/C420-M/C435/C435-M Firmware Release Notes (AA12/AA13)
To upgrade firmware for this device, upgrade to Plantronics Hub 3.9.2 or better. Prior versions of Plantronics Hub will not be notified of an upgrade for this device.
Version 90What's New
- Improved mute synchronization reliability.
- Implemented mute of sidetone audio when device is muted.
- Improved compatibility with Microsoft Office Communicator R2.
- Fixed compatibility with Microsoft Lync running on a Mac.
- Fixed transmit audio clipping and distortion issues.
- Fixed an issue related to operation between mono and stereo modes.