App Store - Managing Availability of Your Apps' Previous Versions

Apple release a new feature of the App Store. The ability for owner of iPhone with non compatible iOS version to download a previous (the last compatible version) of your App.

This can be pretty cool. But unfortunaly I have an old version of my App supporting iOS5 which is not at all supported by my backend. The last version require iOS6 minimum. So any user having iOS5 download an unsupported version of the App.

Apple said that you can delete previous version (https://developer.apple.com/news/?id=9182013a):

> If you do not wish to make these versions available, you can manage the availability of your apps' previous versions in the Rights and Pricing section of the Manage Your Apps module in iTunes Connect

But I can't find any link about this in the "Rights and Pricing".

Did anybody successfully deleted previous version of their App?

Any help appreciated.

EDIT 2013-10-04: Apple have send an update email to announce the feature ("iTunes Connect: Managing the availability of your app's previous versions.") but still no luck.

Edit: this is no longer applicable with the new iTunes Connect UI, check out Sars' answer for an updated version

After looking for this page for a few weeks, I finally figured out how to access it:

1. First, go to the Manage Your Apps section on iTunes Connect.

2. Click the app that you want to edit.

3. On the right-hand side of the resulting page, click "Rights and Pricing":

4. Scroll down and click the terribly-named "Manage iCloud download settings for this app":

5. A list of all versions of your application will appear. You can check a specific version to prevent it from being downloaded due to "a significant usability issue":

Update for new UI of iTunes Connect (2014).

1. Go to "My Apps" section on iTunes Connect.

2. Click the app that you want to edit.

3. On the top menu, click "Pricing"

4. Click "Manage iCloud download settings for this app" at the bottom of window

It looks like the option has moved again.

1. Go to iTunes Connect and select your app under My Apps
2. Select Pricing and Available on the left-hand side.
3. Scroll down to the bottom of the page and expand Last-Compatible Version Settings.
4. Click on the All link to see the available versions.

I believe I have the answer, after looking in the iTunes Connect Developer guide. It says:

You can also indicate a legal issue with your app, including previous versions, from the footer of the “Rights and Pricing” page. Indicate a legal issue with your app by selecting each version of your app that has a legal issue. You cannot select a version of your app that is ready for sale. If the version of your app that is ready for sale has a legal issue, you must submit an update for the app and indicate the legal issue during submission.

Apparently, indicating a legal issue will prevent users from downloading previous versions.