Kjelders2002

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3. Failed to recognise device ... failed to open USB

This above instructions did not fix the issue.  There is definitely a issue with Sena's software  

1. Community
2. Tips & Troubleshooting
3. Failed to recognise device ... failed to open USB

I'm having the same issue.  I'm running Widows 7

1. Community
2. Tips & Troubleshooting
3. Failed to recognise device ... failed to open USB

KW - Exactly!  I am a Senior Software Engineer and can't get this to work.  I wanted the latest firmware because of the audio volume update.  There is something wrong in the latest Sena manager sof...

1. Community
2. Tips & Troubleshooting
3. Failed to recognise device ... failed to open USB

I bought mine (2) in April.  The wife and I used them on our 5,100 miles trip on the Gold Wing.  They were great.