The nude patch does edit the exe for "The Sims 2," but makes a backup in case you want to restore the patch at a later point.
Blur Censor Removal Cheat Code
Instead of the nude patch, there is a cheat code you can use to turn the blur on and off. The cheat code removes the blur, which will show exactly the same thing a Barbie doll or Ken doll does. It does not show detail of a Sim's body. For a Sim to have more explicit details, a user has to do download custom created nude skins, created by other gamers not Maxis.
To turn off for "The Sims" and "The Sims 2 Nightlife": intProp censorGridSize 0, to turn on: intProp censorGridSize 8