Mac OS X Lion Developer Preview 4 is Now Available to Download

Jun 6, 2011 - 60 Comments

Mac OS X Lion Developer Preview 4 now available to download from Apple

Mac OS X 10.7 Lion Developer Preview 4 has been released for developers to download from Apple’s servers. The new build number is 11A480b and includes a variety of changes that were shown at WWDC 2011, and was announced alongside iOS 5 beta 1 and iCloud.

Developers can download the update directly from Apple through the Mac Dev Center. If you’re currently running Lion DP3 you can also download it directly through Software Update, although this does not seem to be available to all users yet.

Not a developer? You can get a nice preview of the latest build in first portion of the WWDC 2011 video, otherwise you’ll have to wait until July for the official release date.

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Posted by: Matt Chan in Mac OS X, News

60 Comments

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  1. xf says:

    not showing up in SWupdate yet and it’s a slow download from the App Store.

    I’ll post the pkg link if I can find it though, always makes it easier IMO

  2. Marley says:

    Software update tells me I’m already up to date, and the DevCenter times out with that stupid error page.

    :(

    I admit, I’m impatient.

  3. Adrian says:

    I want a look at the version of iWork that was being used! :) Versions is definitely not enabled in the stock installation…

  4. Kevin says:

    Can anyone notify me when it’s available as a software update? I can’t even download the keynote from the podcast on iTunes… Developer Preview 4, please come to software update. Also, iTunes 10.3, don’t redirect me to 10.2.2 please….

  5. […] X Lion space wallpaper shown throughout the WWDC 2011 keynote. This one is fresh out of WWDC & Lion Developer Preview 4 and shows the gorgeous Andromeda Galaxy, it looks stunning on any Mac […]

  6. Selcuk says:

    Has anyone updated through software update from dp3 to dp4 ?

    • M says:

      I don’t think it is widely available through Software Update yet, seems to be on the Mac Dev Center site only

  7. AlexP says:

    I am running Lion DP3 and I can’t update via Software Update… I think this will be golden master and will be avaliable only for registered developers.

    thks

  8. iosguy says:

    anyone wanting to register their udid for ios5 email me at
    iosguy@yahoo.com

  9. PeterW says:

    I got the latest preview 4 and tried to install this morning and I got an install error. Not what I was expecting.

    Any one else had that issue?

    • rob says:

      I had an error too. Turn on the log and take a look. If you have the same issue as me, you will see a disk error. So I booted up in the recovery partition, and ran the disk utility on the main disk and repaired it. Then I rebooted back to the normal start-up disk, and ran the installer again – the second time, it worked.

  10. Alan says:

    Peter, how did you get it, please?

  11. johnny says:

    Yes someone please tell me where to get it from. is it on newsgroups yet?

  12. PeterW says:

    I have a developer license and downloaded from the App Store last night – it took overnight to do it which is what I expected.

    However I have preview 3 and I tried to install this morning and it errored. So I’m not sure if others have been successful.

  13. Perry hacker says:

    My install will not work either. I get endless spinning gear after it restarts. Safe mode brings me back to dp3

  14. Tom Davey says:

    I wiped my Lion partition to just start fresh. Went onto my SL partition and started installer DMG from there. Looked very polished and GM like. Restarted without an issue until I got to the installer page. As the screen booted up through the blue, the graphics severely glitched, but then the installer window came up with the blue candybar bar which moved about to steps at a stuttery frame rate, if you will. It then froze. I have rebooted into SL, repeated with a wipe of the Lion partition, still no go. Any ideas ladies?

  15. Tom Davey says:

    In a follow up to my previous comment (not showing up yet for some reason) here is the process I go through:
    http://www.youtube.com/watch?v=QwK-o2EjAkw

  16. Alan says:

    Tom, do you have a 2011 MacBook Pro?

    • Tom Davey says:

      Yep, 17″ i7….I remember the DP3 had a problem, I had to delete the wifi .kext in the Extensions folder to get it to boot. But it installed OK….

      • Gravol says:

        I had the same problem on a 2011 MacBook Pro 13″, this is how i got past it and got Lion up and running.

        Installed from my SL partition and it hanged on the first reboot. I restarted and held ALT until the boot options show then selected my new Lion partition (without pressing enter) and held CMD+S and pressed enter. Booting in safe mode got me through the whole installation process but then on the next reboot it hangs again due to the same IO80211Family.kext problems as in Preview 3. Just installed the Preview 2 update 1 kext and it’s ok.

        I can’t believe that Apple has not fixed this problem considering that a lot of people reported this even after update 2 and more after update 3.

      • Alan says:

        it seems it can not install on MacBook Pro 2011 machines. also, did you try disabling filevault before upgrading?

        • Gravol says:

          I did not upgrade, fresh install on a separate partition.

          It’s supposed to ship next month and can’t be installed on their own newest machines without messing around??! Hmmm…

          • rob says:

            you do realize they might have left it like that on purpose, to prevent non-developers from messing around with it too much. (They can always post the solution on the internal message board).

      • A. Janssen says:

        Do you have found a solution to install developer preview 4? Because i’m trying 24 hours now and going crazy:(

  17. Amanda M says:

    Any update on this being available through software update? The only item that did show up is for iTunes 10.3….. not what I was hoping I’d see when I saw the icon bouncing around. :P

  18. UNF says:

    for those who cannot wait for official update to arrive …

    OS X Lion DP4.dmg
    3.46GB

    http://imzdl.com/download/230/torrent/macosx10.7liondp4.torrent

  19. Tony Stark says:

    no problems installing on macbook pro 2010 13″.

    definitely has a polished gm feel. the search function that wasn’t working in outlook 2011 (spotlight issue) fixed. new icon for launchpad.

    • Matt Menard says:

      hi, i see you said the search function was fixed but i downloaded Lion this morning and when i search by name, subject, etc…in Outlook, it doesn’t find any emails prior to Lion installation. Do you have any insight into why this is or how to fix it? thank you

  20. Atari says:

    Don’t bother installing on a MacBook Pro 2011. It will just freeze on first boot.
    No solution for now.

    Strange Apple cannot get it to work on the latest MBP 2011. :-/

    • Gravol says:

      Checking the other posts might help:

      “I had the same problem on a 2011 MacBook Pro 13″, this is how i got past it and got Lion up and running.

      Installed from my SL partition and it hanged on the first reboot. I restarted and held ALT until the boot options show then selected my new Lion partition (without pressing enter) and held CMD+S and pressed enter. Booting in safe mode got me through the whole installation process but then on the next reboot it hangs again due to the same IO80211Family.kext problems as in Preview 3. Just installed the Preview 2 update 1 kext and it’s ok.

      I can’t believe that Apple has not fixed this problem considering that a lot of people reported this even after update 2 and more after update 3″

  21. Reeko says:

    Works on my mbp 2011 13″ with no issues. Installed from DP3 environment on a new partition. No problems at all…

  22. emeranik says:

    Frozen on my MBP 13″. Never get passed the grey screen with apple logo and spinning circle….

  23. sammich says:

    Can anyone provide a link with the Lion Dev Preview 2 Update 1 “IO82011Family.kext”? I would be most appreciative :D

  24. Ashpreet says:

    After i installed Lion DP 4. the computer restarted and i get the Mac Utitiles screen with 4 options
    1. Restore from time machine
    2. Get help online using Safari
    3. Use Disk Utility
    4. Re-install Lion

    I dont know what to do. Please help… urgent.

    • M says:

      That’s not normal, something may have went wrong in the installation process which is why it’s always good to have a backup. You could try Disk Utility to check the disk, and if that fails, reinstall Lion.

  25. NiiLoC says:

    after wrestling with upgrading from dp3 to dp4 on my MBAir for over a day, i finally got dp4 up and running on my 13 inch 2011 MBPro with no issues…

    installed it on an internal HD partition (optibay) from a 10.6.7 environment with no problems whatsoever.

    didn’t have to mess with .kexts or anything.

    @ashpreet: you are booting into the lion recovery mode, you should select re-install lion, if you wish to install…if you have already installed then change your boot drive.

  26. Tom Davey says:

    It seems that some 2011 macbooks work and some do not. I’ve tried every feasible option on my 2011 17″ i7 and its just not getting into the installer.

    Its interesting–I cannot boot into a clean install of DP3 either, however I can get into DP2 clean install. Once in DP2 I upgrade to DP3 just fine via software update. So, I am no in DP3. However DP4 is NOT available on Software update, so the only way is to clean install, which, as I mentioned, doesn’t work on my mac. I believe that the problems effecting the DP3 install are not resolved in the DP4 installer either. The only way past for me would be if Apple released DP4 over software update. Everyone else who has got DP4 running on a 2011–consider yourself lucky!

  27. […] – June 9th, 2011 – Leave a Comment We’ve received a fair share of comments and emails about Mac OS X Lion Dev Preview 4 making some Macs seem sluggish, running hotter than usual, and causing the machines fans to run at […]

    • DB1408 says:

      Fans run high and sluggish when transferring to external drives/timemachine and using other CPU tasking apps simultainiously on MBP 17 with 4GB Ram.

  28. […] from Mac OS X Lion. This one comes from the background of the Mission Control app in the latest Lion Developer Preview 4, it’s not quite as flashy as the galaxy wallpaper but it’s a nice subtle grey shaded […]

  29. DB1408 says:

    If you get stuck on boot screen after restart/shutdown after you have installed and used OS X Lion for a while, where it just hangs.

    Hold CMD ALT P R until you hear the start up chime twice then release. Should clear the hang and launch.

    There is also an extension called ‘don’t steal OS X’, coincidence or not, I deleted this (Confirming delete with password) then the hanging at reboot commenced.

    • AJ says:

      I haven’t had any problems on boot but I know users with 2011 MacBook Pro’s have and it is widely talked about on developer forums.

      Regarding the “com.apple.Dont_Steal_Mac_OS_X” kernel extension, it has been around a long time and is not unique to Lion:

      http://osxdaily.com/2010/03/19/anti-piracy-message-in-mac-os-x-kernel-extension/

      • DB1408 says:

        Thanks. Issues that have randomly happened are with the ‘Airport’ hanging, not allowing access, which is random and has no identifiable cause, uTorrent failing to respond at times, unresolvable unless OS X is restarted (even with force quit) and mail can sometimes prevent shutdown/restart.

        Other than the little nags, it’s far more stable than the first beta.

  30. Vince says:

    i got it installed :
    1. boot in your recovery HD
    2. verify disk & repair disk
    3. reboot and start the installer
    this worked for me .. hope it does for you .
    i’m on a 15 inch 2010 Macbook Pro .
    My Mac gets hotter than usual . 75-80 degrees with Fans on HIGH 6000 rpm.

  31. Stephan says:

    Apple released a minor update to DP4 which fixes the MBP 2011 issues. Great !

    • Tom Davey says:

      How do you get this update, Dev website? I can’t see anything…and I can’t get it through Software Update as I can’t even boot into 2011!

      • Will says:

        Yes, you can get it from the Developer website and the Mac App Store if you’re a registered developer. As far as I know it still has not appeared through Software Update for most users, but that may change now that WWDC is over.

  32. Kenneth says:

    Would you guys recommend installing this just to try out Lion, or is this just for developers (buggy, laggy etc.)? Can I upgrade to the full version like normal (from 10.6 to 10.7) when it’s out?

  33. john says:

    Vince says:
    June 10, 2011 at 11:34 pm
    i got it installed :
    1. boot in your recovery HD
    2. verify disk & repair disk
    3. reboot and start the installer
    this worked for me .. hope it does for you .
    i’m on a 15 inch 2010 Macbook Pro .
    My Mac gets hotter than usual . 75-80 degrees with Fans on HIGH 6000 rpm.

    how do you even boot in you computer in recovery mode…can someone please help.

  34. devy says:

    if you got any errors while installing:
    1. open your preview 4 image,
    2. right click on contained file, “show package contend”
    3. browse to contend/sharedSupport/
    4. open Install ESD
    5. run install file.
    worked fine for me

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