You can download “Xcode” from the App Store for free.
This video was made on Macbook Pro 8,2 (Late 2011).
OSX – Mavericks 10.9.5
Subscribe and like this video if you want more useful tutorials like this.
If you don’t want to use Xcode, please check check out my other video – “How to edit the plist.info” file manually with “TextEdit”.