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I am currently running Mac OS X Lion Developer Preview 3 and would like to install the recent public release version. Any ideas on how this can be done?

When I go to purchase Lion in the Mac App store, it says 'Installed'

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closed as too localized by Daniel Beck, studiohack Aug 1 '11 at 0:21

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

up vote 3 down vote accepted

The normal route Apple wants you to take is to start from a fresh installation. I guess this has always been the case and is most probably mentioned in the terms of the Developer Previews. Not too sure though, since I've never run a Developer version.

MacWorld has an article that outlines a few options you now have. Some users reported those as non-functional, while it seemed to work for others. Here's yet another article that confirms this procedure. Note that these are for the Golden Master versions and not the Developer Previews, so they might not work as well.

  • Delete the version you're running and start with a new installation

  • Option-click the "Buy"-button in the App Store

  • Option-click the "Purchases"-button in the App Store's main window

  • Hold the Option key while you start the App Store

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@masedesign Out of curiosity -- which one worked out for you in the end? (If at all...) – slhck Jul 31 '11 at 20:34

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