Mac OS X Lion Dev Preview 2 Update Released, Developer Preview 3 Soon?

Apr 15, 2011 - 11 Comments

Update: Updated with direct download links for the DP2 Update 1 packages – these files are only relevant for developers with DP2 installed.

An update to Mac OS X Lion Developer Preview 2 has been pushed out via Software Update. The download comes in at around 1GB and changes aren’t specific other than being “recommended for all users running Mac OS X Lion Developer Preview 2.”

What about Developer Preview 3? Alongside the DP2 update, an accompanying XCode 4.1 update includes a reference to “support Mac OS X Lion preview 3,” suggesting that Lion Developer Preview 3 may be released in the near future. XCode 4.1 preview 3 is a required update if you plan on building any software in Lion DP2.

Mac OS X Lion Developer Preview 2 was released to developers on March 30, I found the update to be less stable and more resource hungry than Developer Preview 1, so I haven’t used it much. I’m hoping this update resolves some of the memory leaks that appeared in Developer Preview 2, although not all machines seem to be affected.

As always, backup your Mac before installing system updates. This is especially important when using a beta OS, which is also why I’ll continue recommending the dual boot method if you plan on trying out the Lion preview releases.

Lion Developer Preview 2 Update 1 Package – Direct Downloads

Here are direct download links from Apple for Dev Preview 2 Update 1 Package installers. These do NOT contain the full installation of Lion, only the update package released today. If you’re not a developer with Dev Preview 2 already installed, these won’t be of any use:

Lion Client DP2 Update 1

Lion Server DP2 Update 1

Lion Server Essentials DP2 Update 1

Lion Server Admin Tools DP2 Update 1

Assuming you dual boot between Mac OS X 10.6 and 10.7, all you need to do is download the appropriate Lion DP2 Update 1 package file within Snow Leopard and copy the .pkg file to your Lion partition for installing later in Lion. This is a much easier way to handle updates if you rely on a stable 10.6 installation for most of your work and just boot into Lion for 10.7 specific development.

These links were found on MacRumors forums (thanks David) and are really helpful if you want to download the update from 10.6 to install later in 10.7DP2.

For those who aren’t developers, Mac OS X Lion is due for release this summer, possibly on June 6 at WWDC 2011.

Heads up to MacStories for noticing the Dev Preview 3 reference in the updated XCode 4.1’s change log.


Related articles:

Posted by: AJ in Mac OS, News


» Comments RSS Feed

  1. DanielX says:

    HI! I installed DP2 and boot crashes. I cann’t install LION again. NO disktool. no nothing. some ideas?!?

  2. vikrant says:

    i installed dp2. but system crashed… twice !!!
    waiting for dp3.
    any remedy for installing on iMac 27″ C2D 3 Gz ??

  3. B0bby says:

    Is it possible to update from Live Preview 1. I Have it fully installed with all my programs and settings… i tought i could update with software update.
    If we have preview 3 is it possible to update to the new original alpha version of mac os x lion ??

    Greetz B.

  4. Nixoinajar says:

    Went back in time with time machine, now I lost one page of my eassey -.- should have remembered to back up first…

    • anon says:

      lol what are you doing installing predev installs on your homework computer. You could have at least tried installing it in a virtual environment rather than risking it.

  5. nixoninajar says:

    o_O this update made my mac unusable. i cant even copy files or connect to the internet.

  6. xf says:

    Update takes forever to install.

    If you want to run this you can just go to and spend $99 for immediate access.

  7. Peter Moynihan says:

    downloading now, I hope it’s worth it

  8. Dropbox works in this version! Woowooooooooooooooo!

  9. David says:

    YW :)

  10. Matt says:

    I found Lion Preview 2 practically unusable too, maybe this will fix the huge amount of bugs.

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