How to program the 8-bit S08 3.6V MCUs in programmable xbee PRO ZigBee S2B

Hello all,

I am trying to understand how to program the micro controllers embedded in the programmable versions of the Xbee Zigbee S2B radios. Has anybody done that and can point me in the right direction?

Many Thanks,

Getting started guide:

Software downloads:

SDK documentation: