Hi,
Yes you need to buy a Sierra wireless Dev kit to burn the FW to your module.
MC7354 can store multiple FW images… we can switch between the images given that we have downloaded the FW of that particular image before…
!GOBIIMPREF command will provide you the Image Management preferences.
Link to At command guide: http://source.sierrawireless.com/resources/airprime/minicard/4114486_airprime_mc73xx-8805_at_command_reference/
Thanks,
Alex