Did you complete all the steps when you did the update?
# Locate the appropriate update for your Macintosh model, and download it to your computer by clicking the update's title, then clicking on the file size indicator in download details or at the bottom of the page. The download will place the disk image on your desktop which contains an installer. If you downloaded via Safari, Safari will notify you that an application is in the image. Click OK to continue.
# If "Open safe files after downloading" is checked in Safari preferences, the disk image file will mount by itself. If that preference is not enabled in Safari, double click on the disk image to mount it.
# On the mounted disk image, you will find a file named either MacBookFirmwareUpdate.pkg, MacBookProFirmwareUpdate.pkg, MacMiniFirmwareUpdate.pkg, MacProFirmwareUpdate.pkg, or iMacFirmwareUpdate.pkg.
# Double-click the appropriate package for your computer to start the firmware update process. (The installer puts the Firmware Updater in the /Applications/Utilities folder, and launches it automatically.)
# Read the onscreen instructions and click Shut Down to proceed with the update. The firmware image will be loaded on your machine, and your machine will shut down, but the update will not be installed until the next step.
# Hold down the power button until the power indicator light flashes, then release it. A long tone will be heard, then a gray screen with an Apple logo appears. There is a progress bar under the logo. As the progress bar moves, your firmware is being updated.
The last step is the part that I am thinking was not done...
