There’s an official Twitter application available for mac which you can get for free, but sadly you can only get it from Mac App store, which is available in Snow Leopard 10.6.6 or later. So, last night I decided to update my Snow Leopard from 10.6.5 to 10.6.6. The updating process is rather easy and doesn’t require much effort, I just need to make a backup of 10.6.5 mach_kernel and a few kexts, just as what I did when updating from 10.6.3 to 10.6.5 (written in this guide). Continue reading to find out . . .

  1. First make a backup of the following kexts. Copy it to desktop or anywhere you want to. In case you forgot, the kexts are located in /System/Library/Extensions:

    • AppleIntelGMA950.kext
    • AppleIntelIntegratedFrameBuffer.kext
    • IO80211Family.kext

  2. Next, you need to make a backup of your current mach_kernel (10.6.5) or you can use the mach_kernel from the Snow Leopard 1005HA Installation Kit which I posted in the previous guide, or you can get it from here (10.6.5 mach_kernel only).

Read this if you decided to make a backup of your current mach_kernel (assuming that you’ve updated to Snow Leopard 10.6.5 by following this guide before). For a safer way, I suggest you use the mach_kernel from the Snow Leopard 1005HA Installation kit or download the 10.6.5 mach_kernel from the link above.

Open the Terminal (Applications > Utilities > Terminal) and type in the following commands:

sudo -s cd / cp mach_kernel ~/Desktop

Read this if you decided to use the mach_kernel from Snow Leopard Installation Kit or if you downloaded the 10.6.5 mach_kernel.

- Open the archives and extract mach_kernel_atom to Desktop (located in /Mach_kernel/10.6.5/)
- Go to Desktop and rename ‘mach_kernel_atom’ to ‘mach_kernel’

  1. Download Snow Leopard 10.6.6 Combo Update from here. After you’ve finished downloading the combo update, run it and proceed with the installation. After the installation process has finished, DO NOT restart your computer (you’ll be prompted to restart your computer, ignore this message and minimize the window).

  2. Open the Terminal (Applications > Utilities > Terminal) and type in the following commands:

sudo -s cd / mv mach_kernel mach_kernel_old cp ~/Desktop/mach_kernel / chown 0:0 mach_kernel

  1. Close the Terminal and open the installer window that you minimize erlier and click the ‘Restart’ button.

  2. If everything goes well, you should be back to your Mac Desktop. But we’re not done yet, copy all the kexts that you back up earlier back into System/Library/Extensions/.

  3. Then the last thing that we need to do is to run pfix. To do this, open the Terminal and type in pfix. Wait for the process to complete and restart your computer.

That’s it! Now you have Snow Leopard 10.6.6 in your eeePC 1005HA and of course, Mac App store!