title: How to test a new app on old hardware? (Xcode 4.3.2 with base SDK iOS 5.1; test-device is iPhone 3G with iOS 4.2.1)
body: <p>I am developing an iPhone-App that should run not only on new iphones, but on old devices as well. So for testing, I did load a provisioning profile to my old iPhone 3G (iOS 4.2.1) and connected it with my mac. In Xcode I also did set iOS Deployment Target to 3.0. With this settings, the app runs on an iPhone 4, but not on my old iPhone 3G.</p>
  
  <p>I know that I also must set architecture from <code>armv7</code> to <code>armv6</code>, but when I enter "armv6" it jumps back to "armv7".</p>
  
  <p>So, what must I do, to be able to test new apps on old devices? What values must I enter, and WHERE must I enter them? Do I need to download some addon for the actual SDK?</p>