A few MacBook Pro owners had been complaining of experiencing brief system freezes and unusual hard drive bleeping noises.
The company also introduced Bluetooth Firmware Update 2.0.1, offering bug fixes and better compatibility with the Apple Wireless Mighty Mouse and Wireless Keyboard. This software’s meant for all Macs with Bluetooth based on the Broadcom chipset, so may not show as available in every Mac’s Software Update
On the MacBook Pro update, Apple’s tech support notes inform:
"MacBook Pro Hard Drive Firmware Update 2.0 reduces certain infrequent noises made by 7200-rpm drives.
"These drives shipped with the June 2009 MacBook Pro.
"To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/Hard Drive Update.app).
"The updater will launch automatically when the installation is complete.
"New Hard Drive firmware will be: 0007APM2."