Or you can add save configuration data to the file every time you upload Hex code.
For example:
Open U-Center and choose CFG-CFG. Select Show Hex Tonggle and you will see the configuration code.
Its full form is: [ B5 62 06 09 0D 00 00 00 00 00 FF FF 00 00 00 00 00 00 03 1D AB ]
You need to Copy the 13 Payload bytes behind the first 6 bytes (B5 62 06 09 0D 00) .
They are [ 00 00 00 00 FF FF 00 00 00 00 00 00 03 ].
You can then add to your configuration file. Please add to the end of the file.