title: Add new language to iOS app
body: <p>I would like to translate an iOS app which is only available in Chinese on Chinese store. I'm not the owner of the app. I have succeeded in installing it by switching to Chinese store.
  My intend is to just add the new language localization files by translating original Chinese files.</p>
  
  <ul>
  <li>It seems that I can't just add new files (even resources) to existing IPA without breaking the signature</li>
  <li>I have my own official Apple developer certificate, can I add the new files and resign the IPA with it ?</li>
  <li>I have also tried to decrypt the IPA using clutch to resign it with my own certificate, but installing it on my device fails.</li>
  </ul>
  
  <p>I want to use the application on iOS 9. I have used clutch on an old iPhone 4 with iOS 7 to be able to jailbreak it easily.</p>