On Mar 2, Sena released firmware version 1.1 for 50-series of units. For some reason, this update may/may not update through the WiFi dongle. I had to install it with the Sena App Manager from my desktop (sometime during the last 6 months Sena had updated the App Manager, too -- not sure when, but this one loaded on my Win10 desktop without any problems or errors). Version 1.1 added the ability to control Sena volume via the Wonder Wheel on TFT-equipped bikes. I haven't checked yet to see if it works on older (non-TFT) RT's w/Wonder Wheel (but I'm not hopeful),