how to edit the function parameter in xctu 6.0.2 so that to set one xbee as coordinator AT

Indeed to check the communication between two xbee s2 modules, i connected two xbee s2 modules on two different usb ports of my laptop and tried sending an ascii packet, but i am not aware of setting one xbee module as coordinator in xctu 6.0.2 version teminal. pls help out.

You need to use the Configuration screen or the Recovery function to change the firmware version.