Mac OS X 10.5.1 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 10.5.1 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.
Mac OS X 10.5.1 Update SHA-1 Digest:
For explanation of what a SHA-1 digest is, please visit this website: Mac OS X: How to verify a SHA-1 digest
For detailed information on this update, please visit this website: About the Mac OS X 10.5.1 Update
For detailed information on security updates, please visit this website: Apple security updates