Pokedex 3D Pro .Z5 Files

[SpectroZele]

I've been wondering if anyone has really done much relating this weird "encryption" the game has,been wanting to get the models seeing as there aren't really any to be found and these are some of the nicer Pokémon models.
I did some research on the format but I couldn't find much considering the posts I found have been made years ago.
I'm including a sample file for anyone that's interested in helping me out.