DSM 300 software update with A98 MFD

I followed the Raymarine instructions for updating the DSM 300 using my A98 MFD. Install the mSD card. Start the MFD and get an error message that says; "set the target device, then reboot." I can't find any instructions or information on how to "change the target device" on the A98. When I reboot, with the card out, I can check the DSM through the system settings, maintenance, device list, and see the DSM reporting that it is running software version 3.16. The lasted version is 4.2. Any ideas or suggestions? I am running Lighthouse v17 and downloaded the correct version per the RM website.

Thanks