Modding discussion.

You just need to change the last modified date. That is, you need to make sure that the *.pak file was modified after the patch was released, as the game reads information from the files with the latest modification date. Since the patch was released on July 20th, all *.pak files with a modification date before July 20th will not be read by the game.

I wrote it clumsily, but I did my best.