How To Upgrade Your Mac to OSX 10.5.7
Basically, if you want the MacPro system running of your laptop
updating to OSX 10.5.7, you can do it through an old manual or shorter
way. In case you want to do a shorter way you need to make sure you
have dsmos/appledecrypt and appleintelcpupm disabler kexts installed
to /Extra. And then you can simply to update system to OSX 10.5.7
However, if you are the ich10r users you don’t need legacy kexts for
ich10/ahci anymore, 10.5.7 already supports ich10r out of box. It
comes since the new MacPros has ich10r. That means you need only
legacy ahciblockstorage to fix orange icons that might appear.
Here the one important notice you need to know is legacyhda may not
work with newer applehda.kext from 10.5.7. So you will need either and
make sure you legacyhda works with 10.5.7 or use applehda.kext from
10.5.6. If you use applehda.kext from 10.5.6, the alc889a legacyhda
you may have needed to be updated. And also, you still need to carry
abotu whatever custom drivers you have.
