title: Is testing an app with only an iOS 5 device and iOS 4 simulator OK?
body: <p>I've recently upgraded my Xcode version and have been having <a href="https://stackoverflow.com/questions/8864410/cannot-build-to-4-2-1-device-with-xcode-4-2"><strong>huge</strong> trouble</a> trying to build to my 2nd gen iPod Touch running iOS 4.2.1. - So much so that I've given up attempting.</p>
  
  <p>Building to the simulator works fine for the iOS 5 and iOS 4.2 simulators - I'm also going to test the app on an iOS 5 device (when I get my hands on one).</p>
  
  <p>Is this testing sufficient to release an app that has a minimum iOS of 4.2.1? - The problem is I've already released the app which has a minimum iOS of 4.2.1, but I need to release this update (without testing on an iOS 4 device).</p>
  
  <p>Are there any issues with doing this? - If it works on an iOS 4 simulator and iOS 5 simulator/device is that good enough?</p>