Connecting to headset has failed

It seems like you've taken several troubleshooting steps already. Since this issue is specific to Meta Quest Developer Hub, it might require some additional debugging. Here are a few suggestions:

1. Check USB Cable and Port: Ensure that you are using a high-quality USB cable to connect your Quest 2 to your PC. Also, try using different USB ports on your PC.

2. Restart Everything: Restart both your Quest 2 and your PC. Sometimes, a simple restart can resolve connectivity issues.

3. Update Graphics Drivers: Ensure your PC's graphics drivers are up to date. Outdated drivers can sometimes cause connection problems.

4. Check Firewall and Antivirus: Sometimes, security software can block connections. Ensure that your firewall or antivirus software isn't blocking the Meta Quest Developer Hub.

5. Meta Support: Consider reaching out to Meta Support for more specific assistance. They may have insights or updates related to this issue.

6. Reinstall Meta Quest Developer Hub: If none of the above steps work, you might want to try uninstalling Meta Quest Developer Hub and then reinstalling it from scratch.

7. Quest 2 Updates: Continue to check for updates for your Quest 2. Sometimes, new updates include bug fixes that might resolve connectivity issues.

Remember that technology can be complex, and sometimes issues require a combination of troubleshooting steps. If none of these solutions work, contacting Meta Support directly might be your best course of action for a more personalized solution to this problem.