S3 2015 it Japan import to new zealand

[Matthewfbi]

Every time I try change the map, either the files outdate or corrupted even I tried paying someone to do it, but they couldn’t, but I do have aeven I tried paying someone to do it, but they couldn’t, but I do have a sd card do it. Any recommendations? all I want is change it to New Zealand. I even tried this out the free one https://mibsolution.one/#/1
I would like some help please