Even with an official download, Patch 1.70 can be finicky. Here are the most frequent issues.
Once installed, the EA App will automatically keep the game at the latest build (currently Build 1.70.305). The Sims 3 Patch 1.70 Download
Warning: EA removed the official 1.70 manual patch from their servers, but the community has archived it. Use the 1.67 patch unless you absolutely need 1.70. Even with an official download, Patch 1
That was when she stumbled upon a post on a Sims forum about Patch 1.70. Apparently, this update had been released by EA Games, the game's developer, to address some of the most pressing issues plaguing The Sims 3. Emily's heart skipped a beat as she read about the fixes: improved stability, reduced loading times, and (most importantly) resolved glitches. Even with an official download