The method is as follows:
First, install a binary file editor UltraEdit software on the computer, search the software on the Internet, and then download it to the computer for installation. After the software installation is completed, first open the UltraEdit software, and open the notepad text document "sp.txt" in the software.
"36" means that the port number is COM6. If the port number of your mobile phone is COM 1, you can manually change "36" to "3 1", and so on.
For baud rate modification, please refer to the two places circled in blue in the above picture. Just change the baud rate corresponding to C and D to your own. For example, the baud rate is 4800, C0 is below C, 12 is below D, and other baud rates are compared as follows:
c0 12== >4800;
80 25== >9600;
40 38== > 14400;
00 96== >38400;
00 E 1== >57600;
After manually modifying the port number and baud rate, finally save the file in the software.