Change the connection output port from USB to the exact you noted in Step 3 (e.g., COM3).
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Goldcut (manufactured by GoldCut Technology Co., Ltd.) does not maintain an extensive public driver archive. Your best resources are: goldcut jk series driver windows 10
Right-click the downloaded installer file (e.g., CH341SER.EXE ) and select . Click the Install button within the utility setup window.
Right-click the Windows Start button and select . Change the connection output port from USB to
When the blue boot options screen appears, navigate to: > Advanced options > Startup Settings . Click the Restart button on the bottom right.
Older JK Series cutters use a 9-pin serial port. Windows 10 does not natively support these ports on modern laptops (which lack serial ports). You will need a . When the blue boot options screen appears, navigate
This indicates a data corruption issue caused by a baud rate mismatch or incorrect flow control. Return to Device Manager and lower your bits-per-second rate to 9600. Ensure the flow control is toggled to "Hardware" to prevent the computer from sending data faster than the cutter's internal memory buffer can process. Device Manager Displays a Yellow Warning Triangle