app doesn't appear under other simulator iOS versions

My deployment target is 3.2, but when i change the simulator version to 3.2 through the "Hardware开发者_JS百科" menu, it doesn't show up as installed.

Why is that?

You need to tell Xcode to install under the iOS 3.2 simulator, because when you build for the simulator, Xcode only builds for one version at a time (you may currently be building for 4.2 for example).

After installing from Xcode, though, your simulator for that given version will keep the app; changing build versions later won't cause your app to be uninstalled.

You have to install an app in each Simulator device & OS combination you want to use. Each Simulated device & iOS combination stores apps in a different Simulator Application Support sub-directory.

It's possible that different iOS versions may require this because they may occasionally use slightly different app directory or app meta-data.