After installing patch 1.70, do this:

There is no standalone manual download installer for version 1.70. It is distributed automatically through the EA App for Mac . Open the on your Mac. Go to your Library and select The Sims 3 .

There is no official . The game's final official update was Patch 1.67 (Disk) or Patch 1.69 (Origin/EA App). ⚠️ Critical Warning