title: How build Xamarin against older version of iOS SDK
body: <p>I'm trying to build my Xamarin Forms app for the Apple store using Xamarin Studio on my MacBook. This worked fine until recently.</p>
  
  <p>The only options available to me on the SDK version dropdown on the iOS Build tab are Default and <strong>8.3</strong>. If I build using either of these and try to upload to the store I get the following error:</p>
  
  <blockquote>
    <p>ERROR ITMS-90068: "This bundle is invalid. The value provided for the
    key MinimumOSVersion '8.3' is not acceptable."</p>
  </blockquote>
  
  <p>I guess this is due to updating all Xamarin and Xcode components to their latest versions recently.</p>
  
  <p>I'm trying to figure out how to get the 8.2 SDK back.</p>
  
  <p>I tried downloading the <strong>iOS 8.2 Simulator</strong> from <code>Xcode &gt; Preferences &gt; Downloads</code> but that doesn't seem to have added anything in the Xamarin SDK version dropdown.</p>
  
  <p>Any ideas?</p>