This update is 3.1 meg.

http://www.apple.com/support/downloa...eupdate12.html


About this update

This EFI Firmware Update fixes several Boot Camp, start up, and wake-from-sleep issues on MacBook Pro computers.

After the firmware update is successfully applied to your computer, your Boot ROM Version will be:
MBP11.0055.B08 (MacBook Pro 15 inch)
MBP12.0061.B03 (MacBook Pro 17 inch)

You can confirm the version of the Boot ROM installed on your computer using System Profiler.

Your computer’s power cord must be connected and plugged into a working power source.

Note: Print or write down these instructions before you begin the update.

To update the firmware on your Intel-based MacBook Pro:

1. Quit all other open applications.

2. Click Shut Down in the MacBook Pro EFI Firmware Update window and wait for your computer to shut down.

3. Press and hold the power button on your MacBook Pro until the power indicator light flashes repeatedly, then release the power button to begin the update.

A status bar indicates the progress of the update.

Important: Do not interrupt the update.

Your computer restarts automatically when the update is completed and opens the MacBook Pro EFI Firmware Update.

4. Click OK, if the firmware is now up-to-date.

If these instructions appear on your screen again, the firmware update was not successful. Repeat steps 2, 3 and 4.

For more information, please visit this website:http://www.info.apple.com/kbnum/n303364

Just performed the update. Took about 90sec. No problems.

Done my wifes machine the day it came out, and did the mac mini update on mine the same day too.

No problems in doing either..

All good on MBP 2.16, MBP 1.83 and iMac 1.83.

Applied it last night went well on my MBP