title: "The Developer of this app needs to update it to work with this version of iOS" pop up coming when launching Enterprise app for iOS 15
body: <p>We have an enterprise account, and till iOS 14 there were no issues, but as soon as user update their phones to iOS 15, they are getting this alert.</p>
  <p><a href="https://i.stack.imgur.com/zzq5q.jpg" rel="noreferrer">The Developer of this app needs to update it to work with this version of iOS</a></p>
  <p>Now, this issue is coming only for enterprise apps running on iOS 15. I have done some research and found this article. <a href="https://developer.apple.com/documentation/xcode/using-the-latest-code-signature-format" rel="noreferrer">https://developer.apple.com/documentation/xcode/using-the-latest-code-signature-format</a>.</p>
  <p>In here it states that</p>
  <blockquote>
  <p>To check whether an app called MyApp.app has the new signature, you
  can use the</p>
  </blockquote>
  <blockquote>
  <blockquote>
  <p>codesign utility:
  % codesign -dv /path/to/MyApp.app</p>
  </blockquote>
  </blockquote>
  <blockquote>
  <p>Look in the output for a string such as CodeDirectory v=20500. For any
  value of v less than 20400, you need to re-sign your app.</p>
  </blockquote>
  <p>I did that and my output was indeed v=20400. I have signed the app using Xcode 12.5 running on Mac OS 11.2.3. I don't think Apple documents are correct for this. (I could be wrong)</p>
  <p>Can anyone please help and let me know, what exactly we need to do to get this issue fixed?</p>
  <p>EDIT:
  I was able to solve this issue by upgrading OS to Big Sur. Xcode version was 12.5.</p>