Apple has released MacBook Pro EFI Firmware Update 2.8.
The new firmware version will address a display flickering issue on the late 2008 15-inch MacBook Pro.
The new firmware update requires OS X 10.5.8, 10.6.8, or 10.7.3 to run.
According to Apple’s slim release notes:
This update is recommended for MacBook Pro (15-inch, late 2008) models. The update resolves a graphics issue that may cause the internal display to flicker.
MacBook Pro EFI Firmware Update 2.8 is available for download from the Software Update application on compatible Macs. It is also available as a downloadable installer from the Apple Support website.
Source: The Mac Observer