How to reverse 10.9.5 to 10.9.2?

Discussion in 'OS X Mavericks (10.9)' started by deejco1, Feb 22, 2015.

  1. deejco1 macrumors newbie

    Joined:
    Feb 22, 2015
    #1
    Hello Everyone,

    I have an original 2006 Mac Pro desktop 1,1 computer. I was able to install Mavericks onto it with some elaborate instructions. It worked beautifully for months.

    I recently updated my itunes to the latest version, which had some buggy problems. I then, very foolishly, decided to update my OS to 10.9.5 to see if that would solve the problem. Now my computer wont boot up. I get the flashing question mark screen.

    I tried holding down the option key while booting up trick, the holding down the shift key trick, the holding down the command-option-P-R keys trick, none worked to boot up.

    I was finally able to access my hard drive by attaching a firewire cable to my laptop and using the hold down the T key trick.

    My question is, can I reverse the update back to 10.9.2 from my laptop? I'm not very computer savvy. Any help will be greatly appreciated. Thanks in advance.

    Dave
     
  2. SlCKB0Y macrumors 68040

    SlCKB0Y

    Joined:
    Feb 25, 2012
    Location:
    Sydney, Australia
    #2
    Hi Dave,

    The best way to do this is to simply revert to the backup you made when you were on 10.9.2!

    Failing this the only option I can think of is to backup your files and do a clean install.
     
  3. vista980622 macrumors 6502

    Joined:
    Aug 2, 2012
    #3
    What you need is not a downgrade. Instead, it is to set your Mac Pro in target disk mode and connect it to another Mac with FireWare cable, the re-apply the same patch you previously did. (boot.efi replacement? Chameleon?)
     

Share This Page