updated 06:05 pm EST, Tue December 8, 2009
Updates address noise in Macs and bugs in WiFi.
Apple on Tuesday released updates to address optical noise created by its line of MacBook computers, including EFI Firmware updates for its MacBook EFI Firmware Update 1.4 [3.14MB] and MacBook Pro EFI Firmware Update 1.8 [3.36MB] lines and a SuperDrive 3.0 Firmware Update [18.35MB] for iMacs and Mac minis. According to Apple's SuperDrive Documentation, if you see Revision: KA15 or 2AHG on an iMac, it needs to be update (and it will be either KA16 or 2AHH after the update) and Mac mini with the Revision 2AHF drives require this update (afterwards it will be 2AH1). It is unclear if the updates fix SuperDrive issues revealed by one developer that surfaced shortly after Snow Leopard was released.
In addition, Apple also released its AirPort Client Update 2009-002 [12.95MB], which is recommended for all Macintosh computers running Mac OS X Snow Leopard 10.6.2. Apple says the free update includes fixes for (1) the inability to turn AirPort on or off in some cases after upgrading from Mac OS X Leopard; (2) an occasional loss of network connection when using Wake on Demand; and (3) the inability to create a computer-to-computer network, or share the Internet connection on some MacBook, MacBook Pro, and Mac mini computers