Getting your copy of SimCity 4 Deluxe Edition up to version is the final step in ensuring the game is fully patched and ready for modern custom content. Direct Download Links
For players still using the original physical CD-ROM version, the patching process is manual. You must first ensure your game is updated to the "Rush Hour" or "Deluxe" equivalent, which is version 1.1.610 or 1.1.613. From there, you apply the EP1 Update 1 to reach version 1.1.638. The jump to v1.1.640 specifically refers to the update that adds the "Buildings as Props" functionality, allowing custom-built structures from the SimCity 4 Lot Editor to appear correctly in your cities. simcity 4 deluxe edition v11640 patch link