This is pack of AI upscaled textures for XIII Classic. Installation: unpack "textures" and "system" into Your XIII Classic main folder. For steam by default it's C:\Program Files (x86)\Steam\steamapps\common\XIII - Classic Screenshots folder includes some comparsion material before and after.
This version includes hotfix 1.2.1 if You had it installed before You don't need to redownload. This is the latest version of the mod.