Is it possible to Flash XBee-Pro-2 with -1 firmware

We ordered XBee-Pro Series2 modules(2241) with RP-SMA connectors. We are currently using Series1 modules(10CD) in our application with the DIO pass through enabled. Is it possible to flash the 2241 series2 modules with firmware for 10CD series1?

Although the series 1 and series 2 modules are similar in footprint, they use a different chipset and are not firmware compatible. The XBee series 2 modules are strictly Zigbee.