title: How to update new downloadable product attachment for placed orders in magento
body: <p>I have downloadable products in my magento store.
  My downloadable products are paid software tools.
  We have update these downloadable software tools based on every version changes and enhancing new features in software tools.</p>
  
  <p>Software package is ready for download, when the customers complete every successful payment transaction.</p>
  
  <p>My Question is :</p>
  
  <pre><code>Version - 1:
  </code></pre>
  
  <p>Customers will purchase and use the <code>Version - 1</code> packages for <code>order id #101</code>.</p>
  
  <pre><code>Version - 2:
  </code></pre>
  
  <p>When we update <code>Version - 2</code> in admin panel for corresponding products. we need to place 
  <code>Version - 2</code> download package for <code>order id #101</code> instead id <code>Version  - 1</code>.</p>
  
  <p>Is this option is possible in magento CE 1.7.0.0?</p>
  
  <p>Right now order id #101 is only having Version -1 package for download in customers downloadable page.</p>
  
  <p>But we need to package file for each purchased orders?</p>
  
  <p>Please advise.</p>