Question: Apple recently released a new version of iTunes Connect.
I just want to change the primary language of my app, but the documentation (<https://developer.apple.com/library/ios/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/DisplayInMoreLanguages.html> at the bottom) is now deprecated.

Anyone solved this problem?

[![enter image description here](https://i.stack.imgur.com/55D9K.png)](https://i.stack.imgur.com/55D9K.png)

Answer: 
I found a way to make it work without having to get accepted by the App Store.

1. In Localizable Information, click on the language and choose a new language you want to add as primary language.
2. Very important. **Hit Save** at top right corner.
3. Go down to General Information. You will find now that Primary Language becomes a drop-down menu with new language that you just added. You can proceed to change your primary language and then Save.

[![enter image description here](https://i.stack.imgur.com/RTWX9.png)](https://i.stack.imgur.com/RTWX9.png)
[![enter image description here](https://i.stack.imgur.com/unJNz.png)](https://i.stack.imgur.com/unJNz.png)
I had the same problem. My solution was to untick 'Use XXXCOUNTRYXXX Apple Watch' under 'Apple Watch' in Media Manager (and any others that may be ticked by default). I was then able to change the primary language.

[![Screenshot of tickbox](https://i.stack.imgur.com/BvFS4.png)](https://i.stack.imgur.com/BvFS4.png)