If you don't have Origin or prefer to download the patch manually, you can do so from EA's website. Here's how:
It is a necessary evil for EA App users, but it changes nothing inside the actual game world. If you are on 1.67 and your game works perfectly, lock that version down and disable automatic updates. The Sims 3 Patch 1.70 Download
If you are looking for the latest update for Windows to fix modern hardware issues (like the "Alder Lake" Intel CPU bug), you are likely looking for , which was released in January 2025. If you don't have Origin or prefer to