City Navigator Europe NTU 2024.10

I understand.i am sorry. I would need an unlocked gmapsupp map file for garmin montana 610. I don't really know which one to download and I don't want to download everything ... :-)
I am especially interested in slovakia, hungary and romania.
Do I need to update any software to install gmapsupp on the card?
I'm asking because I previously uploaded a map to the garmin montana 610 from 2022 and had no problem.
After uploading the downloaded maps (gmapsupp) I get a message that I need to contact the seller because the maps are incorrect.