I am trying to program an older XBee radio via the Sparkfun XBee Explorer USB. However, it is an older radio and still says "MaxStream". I have the FTDI drivers installed, and can see the radio in the device manager (shows up on COM3). But when I run either CoolTerm or XCTU and use COM3 (the only port it finds), I get no feedback from the radio at all. CoolTerm never echos anything back from the radio, and XCTU says no radio found on that port. Is this because I have an older radio? Or am I doing something wrong?