Released officially as on October 28, 2020, this update was designed specifically for macOS users . Its primary purpose was to make The Sims 3 compatible with macOS Catalina and later versions (including Big Sur, Monterey, and Sonoma).
Corrects an issue where DLC icons would not light up correctly in the game launcher. How to Download and Install Patch 1.70 The Sims 3 Patch 1.70 Download