Apple has released a series of EFI firmware updates for its late 2008 notebooks. The unibody Macbook, Macbook Pro and Late 2008 Macbook Air all require two updates each.
The updates can all be found and downloaded at http://www.apple.com/support/downloads/ or by navigating to “Software Update” in OS X’s Apple menu. MacRumors has categorized the updates by notebook model.
Unibody Macbook
MacBook EFI Firmware Update 1.3 (1.8 MB)
MacBook SMC Firmware Update 1.2 (556 KB)
Unibody Macbook Pro
MacBook Pro EFI Firmware Update 1.6 (1.9 MB)
MacBook Pro 15-inch SMC Firmware Update 1.2 (559 KB)
Late 2008 Macbook Air
MacBook Air EFI Firmware Update 1.1 (2.4 MB)
MacBook Air SMC Firmware Update 1.1 (556 KB)
