Prepare to brush the firmware, use the brush tool putty (other serial tools can also be used), insert the brush small board into the computer, open the device manager, and check the COM port number of the brush small board.

Open Putty, select the serial port, fill in the COM port number just found in the device manager: COM3, fill in the speed 1 15200, and open it.

Brushing the set-top box can restore the set-top box to the factory state, and the operation speed of cleaning up the garbage in the set-top box is accelerated.