KB-38180: Changing a driver’s serial port at run time.

Can the serial port set up in a driver be edited at run time?

Yes. To do so, you must edite the IO.Serial.Port tag.

To force the IOKit to use these new settings, you must set the driver to OFFLINE mode (IO.WorkOnline = 0), and then set it back to ONLINE mode (IO.WorkOnline = 1).

These tags can be inserted in the application via TagBrowser.