: If you purchased the game from GOG or Steam , your game version is likely already 1.1.641.0 , which is more advanced and does not require this patch.
install the EP1 Update first. Ensure you choose the correct SKU for your region (e.g., SKU 1 for North America, SKU 2 for Europe). Run the 1.1.640 Update SC4Update4BAT.exe simcity 4 deluxe edition v11640 patch link
(Use with caution as FTP links change)