Apple has issued owners of MacBook Pros, MacBook Airs, and basic MacBooks with an SMC update Wednesday evening to address a potentially critical failure of Apple's notebooks reaching 1000 battery charge cycles.
According to the update information, the problem is pretty rare and would cause the notebook computers to “unexpectedly shut down or stop functioning” after reaching 1000 battery charge cycles. Even if you've never experienced the problem, it's recommended that you install the update to prevent the problem from ever affecting you in the future.
To install the update, you will need to have at least 25% of your battery left, or be connected to a power source:
The update also warns that when it’s installing the update your computer screen will turn gray and the fans will spin at a very high speed. You shouldn't disturb the computer during this process. Afterwards, your computer will reboot and allow you to log in and continue where you left off. You should save anything you were working on prior to updating.
You can go to the menu and click on “Software Update” to bring up the update, or you can download them manually from Apple's Web site.
Sources: MacRumors
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