Ensure the COM port assigned is between COM1 and COM4 . Some older software cannot "see" ports higher than 10.
: Some users report that the physical connection must be held firmly against the radio during data transfer to avoid "Read Failed" errors. Connector Confusion jiykr programming cable driver windows 7 extra quality
: The Jiykr cable comes with various connectors. Ensure you are using the correct adapter for your specific radio model to avoid hardware damage. Ensure the COM port assigned is between COM1 and COM4