Did you even read the Announcement??
The software is installed inside the device completely, or is on the card? Sys file modified or created or...?
Software that came with the device may be ... incomplete.
Which map content did you use (do they contain a set of all associated files)? You said 2018, also came with the device?..

OK, the question that should have gone first - is the Nextgen software legal?
I doubt it, but ...