Welcome. Your question is not obvious, but I presume since you are saying you cannot find a map update online and then continue to state the price and year of an update that is available online, you are referring to not being able to find an alternate download. You won't be able to. The map software is tied to a head unit at least 3 different ways that I know of, so there is no way to utilize a "copy". I paid for an update via mapnsoft. It was newer than 2017 but still not up to date. However, the biggest benefit was that it added Apple Carplay and Android Auto, so then I just used Google Maps via Carplay.
I just noticed when visiting Mapnsoft while typing this reply that Hyundai now advertises free updates for select models!