To restart your application in Adobe AIR

Call this function to restart your application

var app:WindowedApplication = WindowedApplication(Application.application);
var mgr:ProductManager = new ProductManager("airappinstaller");
mgr.launch("-launch " + app.nativeApplication.applicationID + " " + app.nativeApplication.publisherID);
app.close();

Note : PLease add this to your app.XML file inorder for the above code to work.