The file is a compressed archive containing a Squads file. When placed in your game’s save folder, it overrides the default database with:
Keeping the Game Alive: A Guide to the "Latest Squad 2023.rar" Update Latest Squad 2023.rar
While the game has an in-game update feature under "Customize" > "Edit Teams", custom .rar files are often needed for the most recent unofficial patches. Here is the general process: The file is a compressed archive containing a Squads file
Adjusted stats based on real-life performance. Latest Squad 2023.rar