I just ordered an X5690 from the link above to upgrade my 4,1 2.66 Quad.
I decided to do the firmware upgrade and when I attempt it, I get the message:-
'The program has encountered an error: 5570'
I googled this and there was some reference that the EFI update is not needed, however the machine shows it as a 4,1 (not a 5,1). Also, the option to downgrade is not available as I thought it might be if the machine has already been upgraded).
Does anyone have any thoughts? I'm worried I ordered my new CPU in vain.
Thanks
Here is what soren4 wrote in another thread to fix that problem. I hope it works. I am going to try it tonight probably.
"Actually I found the solution on Netkas.org. The site was down for a good portion of today and I wasn't abel to search their archives.
Apparently all you have to do is this:
Download the Mac Pro Firmware update 1.5 (MacProEFIUpdate.dmg) from Apple:
http://support.apple.com/kb/DL1321
With the downloaded .dmg on the desktop, double click to mount the image.
Run the Mac Pro 2009-2010 Firmware Tool. It will automatically locate the package and proceed to the next phase of reboot and power switch hold until the little light above the power button begins to flash or you hear a long beep.
There is no need to rename or replace anything. The Firmware Tool grabs the package and proceeds with the process with no 5570 error message.
Hope this helps other Mac Pro 2009 users who are attempting this firmware update."