Instuctions:
1. Install Tpit:
https://www.racedepartment.com/downloads/texture-pack-importer-tool.17294/ The files from this go into the game folder, just copy and paste them there
2. Copy sharedassets 1, 2, 3 into the the Unity_Assets_FIles Folder
3. Run TexturePackImporter
I hope this helps clear everything up!