MacBook Air SMC update 1.8 killed keyboard & trackpad? (on MBA 11,2010,1.6C2D,ML)

Hi all,
A bit of a pickle. This is briefly what has happened:
1. Beloved MacBook working fine with Mountain Lion and all updates applied
2. Notified a single update is available so downloaded and applied "SMC 1.8 update for MacBook Air" using App Store
3. On restart no response to trackpad or keyboard (apart from power key)
4. MacBook responds to SMC reset key combination but this doesn't cure the problem, and now the Bluetooth assistant pops up to help me find a keyboard
5. Other key combinations don't seem to work, and no green light on caps lock key
6. NVRAM reset using external keyboard, this doesn't solve the problem
7. With an external keyboard and mouse attached, everything seems to work perfectly, except the built-in keyboard and trackpad
I took it in to my local Apple Store today and their diagnosis software gave everything the green light apart from the internal USB devices. The "genius" advised this is probably due to a faulty trackpad and replacing that would perhaps cure the keyboard as well, especially as it seemed to be partially working at least.
I am out of warranty but I suggested as everything was working perfectly right up to the SMC update then perhaps they might replace my trackpad and possibly top case for free, if there are no signs of water ingress or physical damage when they open it up. They are considering this but I don't hold out much hope! Has anyone else experienced this issue? What would you do in my position?
Thank you for reading this and any responses are greatly appreciated.

In addition, if I try to do a software update I get a similar crash.
Firefox is working as i itunes and MS Office Apps.
What can I do to resolve? Thanks

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Found this SMC update for the Mac Book Air....for the fan issue.
http://www.apple.com/support/downloads/macbookairsmcupdate10.html

Pagemakers2 wrote:
Makes absolutely no difference.
Just installed the updated and have been on Time Machine for 3 minutes and the fan is going crazy at 6500rpm.
A time machine backup does this (especially if it's running wireless). Mine does this both before and after the update.
FYI, a MacBook Pro does something similar, some tasks just eat CPU and other resources. There's nothing wrong with your machine or the update. Despite people's complaints that the MBA is "slow" it still has a very fast CPU crammed into a thin package. The fan is necessary for tasks like this.

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No more than a minute. It is a two step process. Run the installer, reboot, watch a progress bar and finished. If you are still in the run the installer stage it should be safe to perform a force quit (hold power button for 10 seconds). If it is in the middle of the reboot you may need to visit an Apple store.

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and/or About NVRAM and PRAM
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Here it is...
/dev/disk0
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   0:      GUID_partition_scheme                        *121.3 GB   disk0
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   2:                  Apple_HFS MACintosh HD            120.5 GB   disk0s2
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Use the trackpad to scroll, thats what it was designed for. The scroll bars automatically disappear when not being used and will appear if you scroll up or down using the trackpad.
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Hi all,
Facts:
model: MacBookPro8,1
OS: OS X 10.7.5
Story:
i got a Macbook Pro 8,1 (13,3" Early 2011) which worked flawlessly - until yesterday.
Yesterday I decided to install the MacBook Pro SMC Update 1.6 (http://support.apple.com/kb/DL1626) - a bit unusual for me, since i normally wait a few weeks until others tried such an update. I did nothing in parallel on my mac, just the update. After the installation process i rebooted my system to finish the update process, the scm update installation run, everything seemed to went fine.
But shortly after the login process, my System froze and i had to hard shutdown my macbook. The first 3 or 4 attempts to only switch on my computer i got only a flashing indicator led, as usual, but not display output, no start sound, nothing. I waited a few minutes, tried again, the system started to boot until the login window, but i had no time to input my credentials - the system froze again.
Since a got a bit computer experience, it's my day job, i first thought of a bad RAM. So i replaced it with two totally new ones (Corsair Mac Memory) and some older original Apple RAM, but nothing changed. I did the same with the harddisk, even i don't think it's related to a harddrive failure because of the symptoms, while trying to install a fresh OS - the system froze again.
After that i tried everything Apple proposed: SMC reset multiple times, NVRAM/PRAM reset multiple times, but nothing helped in my case.
So the current state is as follows:
- The system freezes everytime, sometimes earlier, sometimes later. But normally within 10 seconds. (I observed, the longer the computer stays off, the later the freeze appears). After a hard shutdown, i've to wait a few minutes to get the computer to display anything.
- I read the log files after installing the harddrive to another computer (it works fine there), but there seems nothing special (i could post it, if somebody need it). The system just stops responding.
I think, it MUST be related to the MacBook Pro SMC Update 1.6, because i had no problems at all before this firmware update, problems started after it.
Is anybody out there, who has another suggestion for me, or has the same symptoms?
G,
NoWay

I have MacBook Pro 13" (mid 2010) and similar problem (gray screen, system not start, noisy fan, etc.)
I applied last SMC firmware update 1.6
as a result I have unworking MacBook Pro.
When I have been looking table http://support.apple.com/kb/HT1237 I am realised that link http://support.apple.com/kb/DL1626 on update for MacBookPro8,1 1.68f99 (SMC 1.6) and for MacBookPro7,1 1.62f7 (SMC 1.6) is same. And then I booted from Installation Disk1 with 10.6.4 and saw that my version of SMC is 1.68f99 instead 1.62f7.
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Safari is slow to connect to web pages. Typing in mail hangs.
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Report generated February 15, 2015 at 9:56:50 AM CST
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
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    iMac (21.5-inch, Mid 2010) (Technical Specifications)
    iMac - model: iMac11,2
    1 3.06 GHz Intel Core i3 CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            Empty
        BANK 1/DIMM0
            Empty
        BANK 0/DIMM1
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM1
            2 GB DDR3 1333 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
    ATI Radeon HD 4670 - VRAM: 256 MB
        iMac 1920 x 1080
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 6 days 4:18:43
Disk Information: ℹ️
    ST3500418AS disk0 : (500.11 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Macintosh HD (disk0s2) / : 499.25 GB (222.94 GB free)
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
    HL-DT-STDVDRW GA32N
USB Information: ℹ️
    Seagate Backup+ Desk M 4 TB
        EFI (disk1s1) <not mounted> : 315 MB
        Seagate Backup Plus Drive (disk1s2) /Volumes/Seagate Backup Plus Drive : 4.00 TB (3.71 TB free)
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        Apple Inc. Bluetooth USB Host Controller
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    Apple, Inc. Keyboard Hub
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    HPEventHandler    UNKNOWN (missing value)
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How to cancel MacBook Air software update installation?

My MacBook Air shows that it is installing the software update (latest version) but has not made any progress on the progress bar after 5 hours. Any ideas? Can the update be cancelled?

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Greetings,
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Message was edited by: musashi88

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In my software Updates list, the SMC Firmware update 1.7 just results in same update being available over and over.
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MacBook Pro (17-inch, Late 2011)
MacBookPro8,3
MBP81.0047.B27 (EFI 2.7)
1.70f5 (SMC 1.5)
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MacBookPro8,3
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Could it be a script logic error in /Library/Updates/041-9665/041-9665.English.dist perhaps? I've attached the hardware profile.
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro8,3
Processor Name:          Intel Core i7
Processor Speed:          2.2 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          6 MB
Memory:          8 GB
Boot ROM Version:          MBP81.0047.B27
SMC Version (system):          1.70f5
Serial Number (system):          C0*******RJN
Sudden Motion Sensor:
State:          Enabled
<Edited By Host>

I have MacBook Pro 13" (mid 2010) and similar problem (gray screen, system not start, noisy fan, etc.)
I applied last SMC firmware update 1.6
as a result I have unworking MacBook Pro.
When I have been looking table http://support.apple.com/kb/HT1237 I am realised that link http://support.apple.com/kb/DL1626 on update for MacBookPro8,1 1.68f99 (SMC 1.6) and for MacBookPro7,1 1.62f7 (SMC 1.6) is same. And then I booted from Installation Disk1 with 10.6.4 and saw that my version of SMC is 1.68f99 instead 1.62f7.
In my opinion it's the main reason of our common problem. Apple released not correct SMC update and this update made briks from our MacBook Pro!!!

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Come on guys, anything?

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MacBook Air SMC update 1.8 killed keyboard & trackpad? (on MBA 11,2010,1.6C2D,ML)

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