The update to 10.6.8 for Hackintoshes is pretty painless. It doesn’t touch/remove anything terribly important if you have a standard build, but it may introduce some problems with your SleepEnabler.kext file.
To avoid any problems I suggest using my methods in the Maximizing Success article here:
That way you can experiment with what works, and have no consequences if you fail since you can just wipe your drive and start over again with a fresh Hackintosh install.
· Download the combo update from the apple site: http://support.apple.com/kb/DL1399
· Start the installer to apply the update
The easiest method (if you followed my other article mentioned above) would be to boot into your other Snow Leopard partition and drag and drop the new kext into System/Library/Extensions folder in the root drive of the partition that has the failed update. You will then have to authenticate, and after that you will need to set the permissions. To do this open up your terminal by going to Go – Utilities – Terminal and do the following:
sudo su <press enter>
(enter your password) <press enter>
chown -R 0:0 (drag SleepEnabler.kext here*) <press enter>
chmod -R 755 (drag SleepEnaber.kext here*) <press enter>
* This should be dragging from your System/Library/Extensions folder, not any other place (ex: desktop or wherever it was originally saved).
After doing this you should be good to go! restart normally and cross fingers. If you do end up having a problem then you may need to consult insanelymac, i cannot stress enough now much of a help that forum is:
Good Luck and happy hackintoshing!