Unlike Arduino, Sunplus chips require specific pin strapping:
: Immediately turn on the power switch of the receiver. The tool should recognize the device and begin the progress bar. sunplus loader tool exclusive
Power on your receiver and wait for the "Completed" message. sunplus loader tool exclusive
Connect your PC to the STB using a high-quality RS232 cable. Select the correct COM port and Baud rate. Load your Firmware/Dump file and click "Start." sunplus loader tool exclusive