Apple has released MacBook Pro Drive Firmware Update 2.0, which "reduces certain infrequent noises made by 7200-rpm drives." Reportedly, some 500GB drives were beeping and briefly freezing.
The company said the drives affected were included with the 13-inch and 15-inch MacBook Pros it began shipping in June. The update Web site does not mention the 17-inch MacBook Pro shipped in January.
Once the update is installed, Apple said the new hard-drive firmware ID will be 0007APM2.
Apple also released Bluetooth Firmware Update 2.0.1, which it said fixes some bugs and provides better compatibility with Apple's wireless Mighty Mouse and wireless keyboard. It is for Mac systems released this year with Bluetooth provided by the Broadcom chipset, including the unibody MacBooks, the MacBook Pro, and the MacBook Air.
The updates require Mac OS X 10.5.7 or later. They were posted Wednesday evening and should be available through the Apple Software Update tool installed with the operating system.