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How to Solve CG FC200 ef01 Error?
After updating their CG FC200 software, a customer encountered the following errors: “ef01: open device failure” and “The device is not licensed for this language.”
The solution from the CG engineer is as follows:
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Avoid using the 12V power supply with the FC200 ECU Programmer during operation.
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Reconnect the USB cable between the device and the computer, allowing it to be identified.
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Once reconnected, reopen the FC200 software.
This should resolve the issue.