Proper use of installFromAirFile() function in ApplicationUpdater

Question

We have an AIR client app that is composed of several sub programs. We want to be able to push out automatic updates to all the programs. We have a system set up so that each program can download its own update. For reliability purposes we would like to instead download one large AIR package and have the sub programs install themselves from AIR packages on the local drive.
According to the documentationn found here:
http://help.adobe.com/en_US/AIR/1.5/jslr/air/update/ApplicationUpdater.html#installFromAIR File%28%29
You are supposed to be able to install from a locally stored AIR file but I can't seem to get it to work within a test program. Can anyone give me a hand working out the proper syntax?

Answer 1

So I managed to figure it out, sorta.
I didn't end up using the installFromAirFile() function at all. I was able to use the applicationUpdater normally by just pointing it to a local update.xml which pointed it to a local update.air file. Here is what I did.
private function Update():void
     var update:File = File.applicationDirectory;
     update =  update.resolvePath("Update.updaterTest.xml");
     var updater:ApplicationUpdater = new ApplicationUpdater();
     updater.updateURL = update.url;
     updater.addEventListener(UpdateEvent.INITIALIZED, onUpdateInit);
     updater.addEventListener(DownloadErrorEvent.DOWNLOAD_ERROR, onErrorEvent);
     updater.addEventListener(ErrorEvent.ERROR, onErrorEvent);
     updater.addEventListener(StatusFileUpdateErrorEvent.FILE_UPDATE_ERROR, onErrorEvent);
     updater.addEventListener(StatusUpdateErrorEvent.UPDATE_ERROR, onErrorEvent);
     updater.initialize();
private function onUpdateInit(event:UpdateEvent):void
     event.currentTarget.checkNow();
private function onErrorEvent(event:ErrorEvent):void
     Alert.show(event.toString());
With the update.xml formatted like this.
<?xml version="1.0" encoding="utf-8"?>
<update xmlns="http://ns.adobe.com/air/framework/update/description/1.0">
  <version>1.1</version>
  <url>app:/updaterTest.air</url>
  <description>
    <![CDATA[
      Update
    ]]>
  </description>
</update>
This seems to work like a charm.