Where in iTunes Connect can I upload my large image icon?

I have an app that is already in the App Store. I am providing an update to the app and want to change the large icon. For some reason it still shows the old app icon. There are no options to upload a new 512x512 icon. Where can 开发者_如何学PythonI do this?

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iTunes Connect → Manage Your Apps → (Your App) → Current Version - View Details → Uploads - Edit

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Thought I would update this as this has now changed.

As per https://developer.apple.com/news/?id=1092013a

Beginning January 9, app screenshots will be locked in iTunes Connect once your app has been approved. New screenshots may be uploaded when you submit a binary for an update to an existing app or a new app

So you can no longer update any images unless you are providing a new binary for upload as well at which point you can do

iTunesConnect --> Manage Your Apps --> (Your App) --> New Version - View Details --> Uploads - Edit