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This usually means the COM port is wrong or the RS232 cable is loose.

Once the loader displays "Completed" or "100%", wait for the receiver to reboot itself. Do not power off the device during the writing stage (80%–100%) to avoid "bricking" the unit. 3. Troubleshooting Tips This usually means the COM port is wrong

You should see a progress bar indicating the data is being transferred. Tutorials on YouTube show that this typically takes a few minutes. This usually means the COM port is wrong