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http://www.macupdate.com/download/21678/macbooksmcupdate1.5.dmg
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MacBook SMC Firmware Updater addresses a rare issue on some Apple notebooks where a battery that has accumulated more than 1000 charge cycles may unexpectedly shut down or stop functioning.

Requirements

  • OS X 10.6.8 or later
  • MacBook

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MacBook SMC Firmware Updater User Discussion

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MisterE Member IconComment+530
MisterE
+0

I have downloaded the .dmg from MU and directly from Apple's site 3 times now but each time I get this warning when opening the .dmg http://i.imgur.com/r1p5pZ8.png

I have seen this with other DMGs before but it's not very confidence inspiring for a firmware update that could brick your computer if anything goes wrong.

MacBook late 2008 running 10.8.2.
Anyone else have this problem?

Reply0 replies
Version 1.5
mex4eric Member IconComment+5
mex4eric
+0

Need to load the EFI firmware first. Hope these two fix the unable to return from lid down sleep problems.

Reply0 replies
Version 1.2
sjj_public Member IconComment+6
sjj_public
+0

I installed SMC Firmware 1.1 on my 2 GHz MacBook, which was *not* exhibiting the sudden shutdown problem as far as I could tell, as is recommended by Apple. There have been no issues with the update.

Reply0 replies
Version 1.1
Nymphe Member IconComment+76
Nymphe
+0

How is it going to fix a hardware problem?

They should replace the heat sink.

Reply4 replies
Version 1.1
gazman
+0

By keeping the operating temperature lower, it shouldn't get to the point where the heatsink is expanding so much that it makes contact with the sensor cable, causing the short circuit.

Having said that, I've had my heatsink replaced under warranty. I still installed this update. The fans seem to be spinning slightly faster at idle, which should keep temps down.

sjj_public
+0

Are we sure the issue really was the heatsink? Certainly that *seemed* like a solution, but perhaps it was not the real solution or a complete solution? Perhaps replacing the heatsink only reduced the problem, with the underlying problem remaining, such that given enough high processor use it would still shut down, just requiring more than before. This is purely speculation on my part, mind you, but Apple is recommending firmware update 1.1 even for those who had the heatsink replaced (indeed, even for those with MacBooks not exhibiting the problem now.) I think it's safe to say that you should install this update. FYI, I installed it on my MacBook which was not exhibiting the problem and have seen no problems with it.

Nymphe
+0

Actually, I think this firmware update simply bypasses the shutdown problem. I ve seen lots of pictures, in which the cable was melted enough. Ok, fine, I am going to install it, but how should I know if my cable burns and mets inside?

If I had the RSS problem, I wouldn't use this firmware, because I couldn't demonstrate the problem again. And I don't want a notebook which has got some loose wires...

Greenie
+0

Incase your wondering this will only fix the issue most of the time. It doesn't always fix the issue and if the issue is not fixed then you actually need the heat sink.

Mark Everitt Member IconComment+276
Mark Everitt
+0

Finally! I didn't anticipate a software fix to the RSS (random shutdown syndrome) problem. Fingers crossed now!

Reply0 replies
Version 1.1
uzku Member IconComment+0
uzku
+0

now the sound from the fan finally ended, took it to get fixed to an apple store and they told me to wait for this update... great job apple!!!

without this fix, i nearly couldnt even take the macbook to libraries as it made that horrible sound (the one that looked like the fan was gonna start but then didnt... I know most of the macbook users know what im talking about)....

now we only need to improve bootcamp so that the mousepad works as in osx!!!

Reply2 replies
Version 
bedouin
+0

"I know most of the macbook users know what im talking about)...."

No, we don't.

Three of my friends have MacBooks; none have the moo'ing I hear complained about on the Internet non-stop.

uzku
+0

thats because they probably have new
If they have early versions like mine, then they should definately know what Im talking about, its a bug and apple had to fix it, it did exist

ShannonRawls Member IconComment+0
ShannonRawls
+0

Updated my BlackBook today because this was in the 'auto update' section. My BlackBook purchased 1.5 months ago was already as quiet as a mouse, but i updated anyhow.

Thus far...2-hours later of constant use, my BlackBook is still as quiet as a mouse. No new noises or fan spinning or anything.

I have a feeling it will simply make my fan run more efficiently on an already quiet macbook.

Reply0 replies
Version 
rdn2 Member IconComment+0
rdn2
+0

Appears to have adjusted the maximum audio volume on my Macbook too.

Reply2 replies
Version 
D9
+0

More or less?

rdn2
+0

More. Not a lot but I seem to need the volume a click or maybe 2 lower than before the update.

ishan3 Member IconComment+0
ishan3
+0

Stopped the occasional mooing completely after 3-4 hours of continuous use. I don't notice any baseline increase in fan noise either. CPU temps appear unchanged on average (using the Hardware Monitor app) compared to the same time yesterday at home with same indoor temp.

Nice fix, Apple.

Reply0 replies
Version 
nparker13 Member IconComment+0
nparker13
+0

Is this for MBP too? Mine has been quiet, so I remain hesistant, as its also not in the software update thingie.

NP

PS, whats SMC mean?

Reply2 replies
Version 
macbullet
+0

SMC i believe is System Management Control

jory
+0

The updater told my that my 17" MacBook Pro was not in need of this SMC updater.

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Details

Downloads 10,856
Version Downloads 811
Type Utilities / System
License Updater
Date 30 Jan 2013
Platform OS X / Intel 32
Price Free
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