Standard Definition Didh

I have a standard definition dish for my RV that I occasionally use with a standard definition receiver and tv. I last used it in November and it worked fine.

When I just tried to use it it says "System update needed - it has been 345 days out of date"

Can I not use the standard definition dish anymore? I only use it occasionally so I am hoping not to have to buy new equipment.

I tried the receiver on my home system and it works fine.