Here are the instructions within the updater, as they appear for the MacBook Pro Updater:
To update the SMC firmware on your MacBook Pro:
- Quit all other open applications.
- Click Restart in the MacBook Pro SMC Firmware Update window and wait for your computer to restart.
The SMC firmware update starts automatically. A status bar indicates the progress of the update. During the update your computer fans will run at full speed, but will return to normal once the update completes.
Important: Do not interrupt the update.
Your computer restarts automatically when the update is completed and opens the MacBook Pro SMC Firmware Update.
- Click OK. The SMC firmware is now up-to-date.