Packing .pack and .list files
Once you have modified your game data, you need to encrypt and pack the files into new .pack and .list files.
If you want to know how the .pack and .list files are structured in order to make your own tools, see Structure of .pack and .list files.
If you have placed all of your files inside DownloadLocal then you should just pack and encrypt that data, not DataLocal or any other packs.
A tool made by fieryhenry which can be accessed via Codeberg.
Follow the instructions on the README to install the program and encrypt the game data into new .pack and .list files.