Monitor the progress bar until it reaches 100%. during this phase to avoid permanently damaging the flash sectors. Troubleshooting Common Errors Error Symptom Root Cause Resolution "Open Serial Port Fail" The selected COM port is wrong or used by another app.
This indicates that the software cannot access the selected COM port. Close any other programs (like PuTTY or Arduino IDE) that might be hogging the serial channel, or try changing the COM port number within Windows Device Manager. Stalls at "Sending Boot File..." gxdownloaderbootv1032 hot