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Download OS X El Capitan 10.11.3 Combo Update
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OS X El Capitan 10.11.3 Update
The OS X El Capitan 10.11.3 update improves the stability, compatibility, and security of your Mac. This update is recommended for all OS X El Capitan users.
This update contains bug fixes and security updates.
For more detailed information about this update, please visit: https://support.apple.com/kb/HT205356
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222