SR100

I have an SR100 and Classic E120 Display. I don't receive the proper weather data for my region in the Great Lakes and was told by Sirius since Raymarine won't support/update the SR100 there is no "fix". Is this correct? And if so, what are my options? I'm hoping I don't need to spend $600 to get a receiver to get a weather forecast when I already have a system in place.

Please advise.