How to add some initialization configurations when refreshing firmware？

[q127981]

Because I need to produce equipment in bulk, it would be inconvenient for me to refresh the firmware first and then perform additional configurations.

So I would like to add some custom configurations that can be updated and take effect every time the firmware is refreshed.
What methods can I use to achieve my goals?

The platform I am using is BL602.
I tried adding the following code to ”win_main.c”, then compiling the firmware and refreshing it to the device.But it didn't take effect.

    CMD_ExecuteCommand("SetPinRole 2 TglChanOnTgl", 0);
CMD_ExecuteCommand("SetPinRole 14 1", 0);
CMD_ExecuteCommand("SetPinRole 20 1", 0);
CMD_ExecuteCommand("SetPinRole 21 1", 0);

CMD_ExecuteCommand("SetStartValue 0 1", 0);
CMD_ExecuteCommand("SetStartValue 1 1", 0);

CMD_ExecuteCommand("SSID1 xxxxxxx", 0);
CMD_ExecuteCommand("Password1 12345678", 0);

    CMD_ExecuteCommand("MqttHost xxx.xxx.com", 0);

So, is it because I misplaced my code that the command did not take effect, or is it some other reason? Besides, can I write a script that executes every firmware refresh to achieve my goal.