Apple releases SMC Firmware updates (1.0) for Intel-based Macs: Boot issues addressed
Apple has released firmware updates for the System Management Controllers (SMCs) on all Intel-based Macs except for the 17" MacBook Pro and the newly announced 13" MacBook.
The information provided by Apple states only that this set of firmware updates address "intermittent boot issues" with Intel-based Macs.
Download links are available as follows:
- Apple Mac mini (early 2006) SMC Firmware 1.0
- Apple MacBook Pro SMC Firmware 1.0
- Apple iMac (early 2006) SMC Firmware 1.0
The update process includes two parts, as described by Apple:
- Download the SMC Firmware Update 1.0 from one of the links above
- Quit open applications
- Double-click the SMC Update.pkg file.
- Click Continue after reading the licensing agreement, then click Agree if you accept the terms.
- Click Install to install the update application.
- After the software is successfully installed, click Close to start the updater application. (If you inadvertently skipped this part, you can find the updater in /Applications/Utilities.)
- Read the onscreen firmware update installation instructions, then click Restart to proceed.
Apple adds:
"As your computer starts, the SMC will be updated. Your computer's fans will run at full speed during the update but will return to normal once the update completes. The computer will restart again once the firmware update is complete. Important: Do not interrupt the update process.
"After your computer restarts a second time, you should see a message stating that the update was successful. Click OK to continue.
"Note: If you see the dialog that you saw in step 7 instead of a message that the update was successful, try installing the update again (use the updater in /Applications/Utilities/)."
Feedback? Late-breakers@macfixit.com.Resources
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SMC update I had a frozen login screen w/h a very loud noise of the fans.
I did a reset of the PRAM and the noise was out for some seconds but login
screen was always frozen. So I resetted the PMU and everything went finally ok.
No more noise and no more freezes.
I hope that can help anybody in the same situation ;-)
Doh,... "As your computer starts, the SMC will be updated. Your computer's fans
will run at full speed during the update but will return to normal once the
update completes. The computer will restart again once the firmware update is
complete. Important: Do not interrupt the update process.
and latest security update. After logging back in the firmware update opened,
ran, restarted and all is well. No problems whatsoever.
the update, the startup process seemed faster. I didn't think to time it before I
ran the update, but now, from a cold start it takes 25 seconds to auto log in to
the only account I have on the box. Does anyone have startup times for a pre-
updated iMac?
I timed an average 24-26 seconds startup for iMac 17" Core Duo before and
after the update.
(from dead power off, to being able to click on icons in the dock)
claim to reflect that.
Thanks