Do you need an updated firmware of the older Series 2.5 but having the same hardware? These Series are designed this way. However, they can still work with Series 2.5 modules if you choose to update the firmware through X-CTU. Have fun using it.
If you are looking for a simple point-to-point configuration, you might want to try the Series 1 instead. The Series 2 requires considerable setup and configuration. We highly recommend Building Wireless Sensor Networks as a guide for setting up mesh networks.
Series 1 and Series 2 XBee modules have the same pin-out. However, Series 1 modules cannot communicate with Series 2 modules.
|Max IO Pins|