I’ve read and followed the two(?) available tileset importing tutorials, but I’m still not able to successfully import the Black Temple tileset from the final chapter of FE8 into FE7. I’ve tried replacing an existing tileset, putting the tileset information into free space, mixing things up in Nightmare, etc., but I always seem to break the game whenever I test it.
I can’t seem to find a working import of the tileset, either; thus the attempt at importing in the first place.
It would be helpful to outline the process that you’ve tried when you imported.
Did you get both the config and the object data? How about tile animations?
You shouldn’t need to overwrite existing tilesets.
These are my notes, as I’m not great at explaining things. I copied the blocks for object, palette, and config from FE8, then wrote them into FE7 free space. The overwriting was an attempt at getting it to work - which it didn’t. There weren’t any animations, iirc.