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Article ID: 000027061
Last Modified Date: 10/20/2021
Access Level: Public

Blackwire 315.1/325.1 Firmware Release Notes


To upgrade firmware for this device, upgrade to Plantronics Hub 3.9.2 or higher.  Prior versions of Plantronics Hub will not be notified of an upgrade for this device.

Version v0222
August 2021

What’s new
  • N/A
Resolved issues
  • Fixes an issue where a long beep is heard when muting/unmuting when using Skype for Business

Version 210
Resolved Issues
  • Resolved issue that would unmute Cisco Jabber call when ignoring incoming Skype for Business call
Version 207
Blackwire 315.1/325.1 Firmware Version 207

Resolved Issues
  • Fixed issues to improve caller experience
Version 205
Blackwire 315.1/325.1 Firmware Version 205

What's New
  • Voice activated mute reminder
  • Mute tone configurability
  • Volume tone configurability
  • Call hold indication from both LED and tone in headset
  • Redial button press capability when idle (Lync and Skype for Business only)
  • Improved Mac compatibility
Resolved Issues
  • Preservation of configuration settings across DFUs
  • Miscellaneous bug fixes and improvements
Version 146
Blackwire 315.1/325.1 Firmware Version 146

What's New
  • Initial release of product