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Update troubleshooting.md
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## Symptoms
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## Symptoms
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### Thonny shows error while flashing Micropython using Windows
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### Thonny shows error while flashing firmware (or Micropython) using Windows
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Possible causes:
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Possible causes:
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- Windows is blocking access to Espressif Serial device
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- Windows is blocking access to Espressif Serial device
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### Device manager alternates visibility of DevBoard from connected to disconnected
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### On Linux, the DevBoard device shows briefly and then disappears; the command ls /dev shows no DevBoard device
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Possible causes:
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- USB-C resiptacle wasn't soldered properly; some pins have poor connection
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- ESP32-S3 Module wasn't soldered properly; some pins have poor connection
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### Device manager alternates visibility of DevBoard device from connected to disconnected
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Possible causes:
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Possible causes:
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- Strapping pins pull-up resistors or capacitors are incorrect
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- Strapping pins pull-up resistors or capacitors are incorrect
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