Fmodel

• Install Fmodel by the Fmodel team

• Launch the program and you should be greeted with the startup screen

• Set the folder to your Paks folder using the ... button and proceed

• Click on Settings and change the Unreal Version to your game's version (it will have to restart if changed)

• If there is red dot next to a pak file, go to Directory > AES and read this

• Find something you want to replace or modify - start with something simple (I'll be using a texture)

• Double-click the asset (if a texture then the texture will appear on the right - you can then right-click > Save Texture)