update c

Improves the stability of the Apple Thunderbolt Display.

Fix for security flaw in bash.

For mid 2013 MacBook Air models.

Adjusts fan behavior and more in the Mac Pro (Late 2013).

For Mid 2012 Retina display models.

Stability and performance fixes

For iMacs with ATI Radeon HD 4850 graphics.

Addresses a critical security issue with the Network Time Protocol service.

The world’s most advanced operating system.

The world’s most advanced operating system.