Plantronics Voyager Legend UC B235 USB PC Bluetooth Headset - Black 87670-01 with Plantronics BT300 Bluetooth USB Dongle Adapter - Used - Fully Functional - Walmart.com
Plantronics MyHeadset Updater - YouTube
How do I update the firmware on my Plantronics Voyager headset? - VoIP Insider
Poly Voyager Focus 2 UC - headset - with charging stand - 214433-01 - Wireless Headsets - CDW.com
Any Manual Way To Update Firmware? | Voyager Focus 2 | Support is not really helping : r/poly