MacBook Pro EFI Firmware Update 1.2 (#3): Resetting PRAM can solve a variety of issues; iSight not functioning -- fix; more

Resetting PRAM can solve a variety of issues A number of potentially serious issues apparent after applying this EFI Firmware Update can be resolved by simply resetting PRAM/NVRAM via the following process:

Shut down your Mac, then start it back up while immediately holding the following keys: Command, Option, P and R. Hold the keys down until the computer restarts and you hear the startup sound for the third time.

This workaround is a good first course of action before exploring more complex fixes. It should also be attempted if your system cannot properly startup after applying the update.

iSight not functioning -- fix Like the iMac and MacBook, some MacBook Pros are suffering from an inability to recognize the built-in iSight after applying this firmware update.

In some cases performing a SMC reset can resolve issues with built-in iSights not functioning properly -- particularly an issue where applications attempting to use the iSight erroneously state that the unit is already in use by another application. Note that this issue can sometimes also be resolved with a simple restart.

In order to perform a SMC reset, use the following process:

1. If the computer is on, turn it off.
2. Disconnect the AC Adapter and remove the computer's battery.
3. Press and hold down the power button for 5 seconds and then release the button.
4. Reconnect the battery and AC Adapter.
5. Press the Power button to restart the computer.

Passwords not requested MacFixIt reader Mark Garrett reports an issue where the system no longer requests a password at appropriate times after applying the EFI firmware update.

Mark writes:

"I have the setting to require password on screensaver or sleep. After the firmware update, it never asks me for password if I either sleep, or start the screensaver. Tried it with external screen attached and not. On the plus side, the issues I had been having with it being slow to wake or not sleeping when I close the lid have been fixed."

Feedback? Late-breakers@macfixit.com.

Previous coverage:

• MacBook Pro EFI Firmware Update 1.2 (#2): System cannot startup after update
• MacBook Pro EFI Firmware Update 1.2 released

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