Your renderers are not updating correctly because you are setting your data when the renderer is created - but you should be overriding the set data method, eg:
override public function set data(value:Object):void
{
super.data = value;
downloadInfo = data as DownloadInfo;
downloadInfo.addEventListener("Progress", onProgress);
downloadInfo.addEventListener("DownloadComplete", onComplete);
prog.label = "Downloading %3%%";
lblPath.text = " - " + downloadInfo.getPathIp();
trace("Downloading: " + downloadInfo.name);
}
And remove the creationComplete listener.