EFI Firmware update Please Help

I am not sure if this realy belongs to this forum, but I am desperate. Two days ago I did my firmware update EFI 1.2. I did everything according to the manual, followed all the (simple steps) thoroughly. I was told that everything went well.
As it turned out it didn't. EFI 1.2 messed up everything.
1.The startup process takes about five minutes.
2.Dashboard doesn't function at all.
3.I had some kernel panics.
4.iPhoto and iMovie don't function properly.
5.Help viewer doesn't function at all
6.The computer is overall very slow and beachball appears when I want to run any program.
7.I could go on forever.
I did my research and found that it is possible to burn a firmware restoration CD. I tried it, but despite inserting a blank CD or DVD, the choice to burn is still grey.
Please help, because this looks bad and my computer is literally unusable. I backed up most of my data and am thinking of reinstalling my OS. Another question is, if my data stays on the harddrive or whether I should back up everything when reinstaling the OS.
Thank you for any helpfull advice.

Well..
Personally, I would follow those instructions to the tee. If in doubt print a hard copy out.. read it a few times, just to make sure you really know what your doing, before actually performing the tasks yourself.
If that still doesn't work, take the faulty system to a Authorise Apple Repair Centre, the engineers there should have an alternative method to recover the system.
http://docs.info.apple.com/article.html?artnum=303364
"Important: Do not unplug, shutdown, or restart your computer while the update is taking place. Interrupting a firmware update can render your computer unusable. If this happens, take your machine to an Apple store or authorized service provider or perform the recovery yourself using another Macintosh computer to download the Firmware Restoration CD disk image from http://www.apple.com/support/downloads/. This software allows you to create a CD which you can use to restore your machine to working order."

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Originally Posted by Yann31
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http://docs.info.apple.com/article.html?artnum=86284
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Hi macinfrance!
I installed the EFI Firmware update successfully on my computer.
It seems to me that your list of nvram is lacking an entry telling your bootloader (boor.efi) exists on your normal harddrive partition.
I suggest the following (i am not quite sure if it will work):
1. Go to the system preferences and select the startdisk fane. Then, be sure to select your system harddrive.
2. Then restart your computer.
3. Make a restore CD in case something goes wrong (instructions at: http://www.apple.com/support/downloads/firmwarerestorationcd14.html )
4. Try the firmware update again.
When i type nvram i get the following contents:
084202115164:~ dagdiesen$ nvram -p
efi-boot-device <array ID="0"><dict ID="1"><key>BLLastBSDName</key><string ID="2">disk0s2</string><key>IOMatch</key><dict ID="3"><key>IOProviderClass</key><string ID="4">IOMedia</string><key>IOPropertyMatch</key><dict ID="5"><key>UUID</key><string ID="6">C68ABA3F-9D52-4699-AA58-69DDF3DCB1FF</string></dict></dict></dict></arra y>%00
efi-apple-payload0-data %02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%02%1f%03%12%0a%00%02%00%00%00%00 %00%04%01*%00%01%00%00%00(%00%00%00%00%00%00%00%00@%06%00%00%00%00%00qS%00%00%f2 U%00%00%9eP%00%00%f6U%00%00%02%02%04%04^%00\%00E%00F%00I%00\%00A%00P%00P%00L%00E %00\%00F%00I%00R%00M%00W%00A%00R%00E%00\%00L%00O%00C%00K%00E%00D%00%00M%00B%00P%002%002%00_%000%000%00A%005%00%000%007%00B%00.%00f%00d%00%00%00%7f%ff%04%00
efi-apple-payload0 <array ID="0"><dict ID="1"><key>BLLastBSDName</key><string ID="2">disk0s1</string><key>IOMatch</key><dict ID="3"><key>IOProviderClass</key><string ID="4">IOMedia</string><key>IOPropertyMatch</key><dict ID="5"><key>UUID</key><string ID="6">00005371-55F2-0000-9E50-0000F6550000</string></dict></dict></dict><dict ID="7"><key>IOEFIDevicePathType</key><string ID="8">MediaFilePath</string><key>Path</key><string ID="9">\EFI\APPLE\FIRMWARE\LOCKEDMBP22_00A507B.fd</string></dict></array>%00
boot-image %02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%02%1f%03%12%0a%00%02%00%00%00%00 %00%04%01*%00%02%00%00%00(@%06%00%00%00%00%00`%0b%ef%0d%00%00%00%00?%ba%8a%c6R%9 d%99F%aaXi%dd%f3%dc%b1%ff%02%02%04%04%18%004%00a%00a%006%00e%007%000%000%000%00% 00%00%7f%ff%04%00
SystemAudioVolume n
efi-boot-device-data %02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%02%1f%03%12%0a%00%02%00%00%00%00 %00%04%01*%00%02%00%00%00(@%06%00%00%00%00%00`%0b%ef%0d%00%00%00%00?%ba%8a%c6R%9 d%99F%aaXi%dd%f3%dc%b1%ff%02%02%7f%ff%04%00
The first entry is referring to the normal system partition where the loader for the Mac OS resides. The second entry is referring to the hidden EFI partition on the harddrive and the new EFI firmware image.
Hope this helps.

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Message was edited by: karinaelise8

Please give more information , what version of windows are you try to use via boot camp?.
(in the windows installation process the Mac Os Partition will be there if you put the windows in the wrong partition automatically you are formatting and installing windows on the Mac Os partition.
Hold "Option" for 7 seconds as you hit the power button .
If everything is correct you can choose between Mac or Windows OS for the start up, select the mac OS
If everything is good still you can use your MAC OS normally till you get a fix .
When booting in windows is normally to the mac not recognize the firewire ports, and depending of the version of the windows in your iMac takes about 5 minutes or more for the Boot .
Please note Not all the "intel macs" are compatible with windows 7 ....
Please give more information , but is look like your firmware is OK , (already you try to re-install it)
Take care with disk utility operation, if you can back up your data and reinstall everything again it may help . (a external hard drive and Time machine can help you a lot) .
If you are near by a Apple store , the genius bar guys can give you more details and the proper help ..you can bring the iMac there .

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I would try out the recommended steps in the following link:
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http://support.apple.com/kb/PH13895
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nikulr wrote:
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