: You must first have the EP1 Update (v1.1.638.0) installed before applying the 640 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
To conclude: If you own SimCity 4 Deluxe Edition on any digital platform, stop playing immediately until you apply the v11640 (4GB Patch) method. : You must first have the EP1 Update (v1
If you’ve recently picked up SimCity 4 Deluxe Edition on PC—whether from a dusty CD-ROM, Steam, or GOG—you’ve probably noticed it doesn’t run perfectly out of the box. Crashes when zooming, lag on modern CPUs, and the dreaded “Save As” CTD (Crash to Desktop) can make the game unplayable. Run the 1
Maxis and Aspyr no longer host this patch on their official sites. However, the has preserved it. The safest, most reliable location is the Simtropolis or SC4 Devotion forums.