Ensure your RS232 cable matches the receiver's pinout (usually TX, RX, and GND). If the tool hangs at "Found Serial Port," try swapping the TX and RX wires. Port Settings:
Ensure no other program is using the COM port and that drivers are correct.
: It allows users to write new software (ROM files) to the device's internal memory.
I can provide a step-by-step troubleshooting guide for your specific setup.