This software updates the firmware of MacBook Pro's hard drive.
The affected drives were those that shipped with the June 2009 MacBook Pro, so if you are using a different model or year, this firmware update is not necessary. However, if you do have the affected drive and want to install the update, the process is straightforward.
To begin, simply download the updater application from /Applications/Utilities/Hard Drive Update.app and follow the instructions provided. Once the installation begins, the updater will launch automatically and the new hard drive firmware (0007APM2) will be installed.
Overall, I am pleased with the effectiveness of this update and would recommend it to any MacBook Pro users with the affected drive. The reduction in noise is noticeable and appreciated, and the installation process was simple and easy to follow.
Version 2.0: N/A