QIODevice* device;

QNetworkReply* reply = manager.get(url);
connect(reply, SIGNAL(readyRead()), this, SLOT(newData()));

device->write(reply->readAll());

QNetworkAccessManager manager;
	QEventLoop loop;
	QNetworkReply *reply = manager.get( request );
	QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));

	loop.exec();

	QFile file( "YOUR FILE" );
	file.open(QIODevice::WriteOnly);
	file.write(reply->readAll());

	delete reply;