This change might be a useful mitigation for issue #166. While a root copy from the binary will still obliterate the existing app data cache on iOS (a problem if the app downloads additional content that isn't included in the binary), this at least makes sure that will only happen when the binary has been updated (or is a fresh install), i.e. it prevents destructive root copy syncs from occurring unless necessary.
This change might be a useful mitigation for issue #166. While a root copy from the binary will still obliterate the existing app data cache on iOS (a problem if the app downloads additional content that isn't included in the binary), this at least makes sure that will only happen when the binary has been updated (or is a fresh install), i.e. it prevents destructive root copy syncs from occurring unless necessary.