To use pirated DLC with a legit base game , the updater is typically used alongside the EA DLC Unlocker , which "tricks" the EA app into thinking you own the extra content. Essential Setup Steps Sims 4 Updater: Guide and Support | PDF - Scribd
I should also mention the technical aspects like how the updater uses delta encoding to minimize download sizes. Maybe some of the backend processes EA uses to roll out updates. the sims 4 updater work