For Sennheiser Bluetooth Headsets, EPOS Connect can be used to update firmware (and remember-- if the Customer wants help with this, get them to the Product Support Team) and that’s about it! Plugging a Bluetooth headset directly into the computer via a USB cable will only charge it and give it access to firmware update. You won’t be able to change any settings because....... All of the adjustable settings for Sennheiser Bluetooth devices via EPOS Connect will come from the Sennheiser Bluetooth Dongle. So, here’s what you’ll see when you plug the Sennheiser Bluetooth Dongle in: On the homepage, you’ll see a picture of the Bluetooth dongle and an invitation to possibly update its firmware (see photo 1): DO NOT UPDATE THE FIRMWARE FOR SENNHEISER BLUETOOTH DONGLES!. We have seen this burn out Bluetooth dongles and kill them instantly. So, until Sennheiser gets this sorted out, JUST SAY NO TO FIRMWARE UPDATES FOR BLUETOOTH DONGLES. On the Settings page (see photo 2) you’ll see a single ta…