About Mac OS X 10.5.4 Combo Update
Add a new Mac to your Mac. Mac OS X v10.5 Leopard is packed with over 300 new features, installs easily, and works with the software and accessories you already have.

Learn more about Mac OS X.

What’s New in this Version
The 10.5.4 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the stability, compatibility and security of your Mac.

For detailed information on this update, please visit this website:
About Mac OS X 10.5.4.

SHA-1 Digest:
490962bf712b2d801d08f42
ca66b8a4541e9da16

For explanation of what a SHA-1 digest is, please visit this website:
About SHA 1 digest.

For detailed information on security updates, please visit this website:
About Security Updates.