In case anything happens to my web site, here is a copy:Disclaimer: This is totally unsupported! I won't be responsible if you Mac Pro catches fire or simply refuses to boot afterwards. I did the update on a 2006 Mac Pro, running the MP21.007F.B06 EFI firmware and 1.7f10 SMC firmware. Anything else, I can't guarantee.
Following MacEFIRom's work on his Mac Pro 2006-2007 Firmware Tool
, here is a way to update the SMC, to complete the 2006-2007 conversion.
First, get the firmware update tool from Apple, at http://support.apple.com/kb/DL222
(md5 sum: 40c5e766f5b59c56501240f6cb732112).
Next, get the required resources from the included package/app:
- SmcFlasher.efi (md5 sum: 16d3c5337c0bfeb8549a034490617737);
- m43a.smc (md5 sum: 79aa57d97697860f70dbb37a1a6f7ee8).
SmcFlasher.efi is the EFI update tool, m43a.smc is the SMC firmware.
Then, using a hex editor, you'll have to modify the EFI updater, in order to bypass the hardware check (which prevents from flashing anything that doesn't follow the approved path).
Here's how a diff should look like (top: modified version; bottom: original version).
Sorry, but I won't post proprietary licensed binaries.
At 0x1797, replace 5 bytes with "33 C0 90 90 90", and at 0x17AC, replace 9 bytes with "90 90 90 90 90 90 90 90 90".
The first 5 bytes are replacing a function call (isValidConfig?) by a xor eax, eax and a few nops, the next 9 bytes are replacing a comparison and a conditional jump by a few more nops.
If you edited the file properly, its md5 sum should now be 39c07aa136b49d0046199b2c35caa2ef.
In order to use it, copy the two files to a EFI accessible partition (FAT or HFS), boot to the EFI Shell, and simply issue the command:
SmcFlasher.efi -LoadApp m43a.smc
To boot the EFI Shell, simply install rEFIt. you can also take a shell.efi binary (for instance, from rEFIt's tools), rename it to boot.efi and copy it at the root of a FAT formatted USB key. You can then boot the key using the Mac Pro built-in boot selector (holding Alt before the chime).
And voilà, you're set. Simply turn off your Mac Pro, reset the SMC, restart it, and start partying like it's 2007!