How programmatically restart an iPhone app in iOS?
I find this way http://writeitstudios.com/david/?p=54
But may be something simple.
my post that you linked to is referring to a Cocoa Application, not the iOS. On the iOS, you can quit an application (but Apple doesn't like this) by using exit(0); but I don't recommend that. You cannot restart iPhone apps though.
exit(0);