If your Harley-Davidson Outrush R is detected by the normal Sena Device Manager but then shows:

“Cannot connect to server”

the issue may not be USB, drivers or the helmet.

The Harley-Davidson Outrush R uses a separate HD firmware branch. My unit identifies as:

• Device: HD OUTRUSH R

• Firmware family: QCC_HDOUTRUSHR

What worked for me:

1. Do NOT use the standard Sena Device Manager.

2. Download the Harley-Davidson / Boom! Audio Bluetooth Device Manager:
   https://oem.sena.com/harley-davidson/

3. Download the official HD-N03 OUTRUSH R firmware from Harley-Davidson:
   https://serviceinfo.harley-davidson.com/sip/content/document/view?id=1883979889049579910

4. Connect the helmet via USB.

5. Open the Boom! Audio Device Manager and perform the firmware update with the Harley-specific firmware.

After switching from the normal Sena Device Manager to the Harley-Davidson Boom! Audio Device Manager, the firmware update completed successfully.

Posting this because I found several HD users running into the same “Cannot connect to server” issue.