Need help installing pirated DLC in PC version!!! (Batman: Arkham Origins)

Hello. In general, I found a video here where a dude allegedly rubs that the skins of Knightfall and the skin from the old TV series can also be installed on a PC, and at the same time this dude shows how to do it all. In general, I decided to download the folder with files that that dude suggested, installed everything as he wrote, here, dot to dot installed exactly the same:

I copied the downloaded folder to the folder with the game, found another folder, copied the necessary files from that other folder , which I had not 8 but 3, well, I renamed what was what the author wrote in the instructions.

As a result, I got a donut hole and not the skins indicated by the author of that video on YouTube!.

In this regard, I appeal to you, if there are those who want to help, then I beg you, do not huddle, because here Arkham Knight has spoiled his soul, therefore, in order to somehow console himself, I want to play at least something. In general, unsubscribe who tried to install what the author rubbed.

By the way, I almost forgot, here is the video where the author rubs that these exclusive skins can be installed on a PC: