Delta Updates
These updates also called individual updates, upgrade Mac OS X to a higher version within the same base version. For example, the Mac OS X 10.5.7 update will upgrade Mac OS X  Leopard from 10.5.6 to version 10.5.7.

Combo Updates
These updates upgrade the base version of Mac OS X to a specific version.  Combo updates include all updates up to and including the version of the update.  For example, the Mac OS X  Leopard 10.5.7 Combo Update will update any version of Mac OS X 10.5 to version 10.5.7 in a single run.  Users will not have to upgrade 10.5 to 10.5.1, 10.5.2, 10.5.3, and so on.


Mac OS X Leopard Updates

Delta updates
10.5.6   (PowerPC or Intel) update Mac OS X 10.5.5 to Mac OS X 10.5.6
10.5.5   (PowerPC or Intel) update Mac OS X 10.5.4 to Mac OS X 10.5.5
10.5.4   (PowerPC or Intel) update Mac OS X 10.5.3 to Mac OS X 10.5.4
10.5.3   (PowerPC or Intel) update Mac OS X 10.5.2 to Mac OS X 10.5.3
10.5.2   (PowerPC or Intel) update Mac OS X 10.5.1 to Mac OS X 10.5.2
10.5.1   (PowerPC or Intel) update Mac OS X 10.5.0 to Mac OS X 10.5.1

Combo Updates
10.5.6   (PowerPC or Intel) update prior versions of Mac OS X 10.5 to Mac OS X 10.5.6
10.5.5   (PowerPC or Intel) update prior versions of Mac OS X 10.5 to Mac OS X 10.5.5
10.5.4   (PowerPC or Intel) update prior versions of Mac OS X 10.5 to Mac OS X 10.5.4
10.5.3   (PowerPC or Intel) update prior versions of Mac OS X 10.5 to Mac OS X 10.5.3
10.5.2   (PowerPC or Intel) update prior versions of Mac OS X 10.5 to Mac OS X 10.5.2


Mac OS X Tiger Updates

 

Delta updates
10.4.10   (PowerPC or Intel) update Mac OS X 10.4.9 to Mac OS X 10.4.10
10.4.9     (PowerPC or Intel) update Mac OS X 10.4.8 to Mac OS X 10.4.9
10.4.8     (PowerPC or Intel) update Mac OS X 10.4.7 to Mac OS X 10.4.8
10.4.7     (PowerPC or Intel) update Mac OS X 10.4.6 to Mac OS X 10.4.7
10.4.6     (PowerPC or Intel) update Mac OS X 10.4.5 to Mac OS X 10.4.6
10.4.5     Update Mac OS X 10.4.4 to Mac OS X 10.4.5
10.4.4     Update Mac OS X 10.4.3 to Mac OS X 10.4.4
10.4.3     Update Mac OS X 10.4.2 to Mac OS X 10.4.3
10.4.2     Update Mac OS X 10.4.1 to Mac OS X 10.4.2
10.4.1     Update Mac OS X 10.4 to Mac OS X 10.4.1

Combo updates
10.4.10   (PowerPC or Intel) update prior versions of Mac OS X 10.4 to Mac OS X 10.4.10
10.4.9     (PowerPC or Intel) update prior versions of Mac OS X 10.4 to Mac OS X 10.4.9
10.4.8     (PowerPC or Intel) update prior versions of Mac OS X 10.4 to Mac OS X 10.4.8
10.4.7     (PowerPC or Intel) update prior versions of Mac OS X 10.4 to Mac OS X 10.4.7
10.4.6     (PowerPC or Intel) update prior versions of Mac OS X 10.4 to Mac OS X 10.4.6
10.4.5     Update prior versions of Mac OS X 10.4 to Mac OS X 10.4.5
10.4.4     Update prior versions of Mac OS X 10.4 to Mac OS X 10.4.4
10.4.3     Update prior versions of Mac OS X 10.4 to Mac OS X 10.4.3
10.4.2     Update prior versions of Mac OS X 10.4 to Mac OS X 10.4.2
10.4.1     Update prior versions of Mac OS X 10.4 to Mac OS X 10.4.1

Updates

• May 1, 2009 - content revision, added links to Mac OS X Leopard update installers