iMac Pro Updating firmware error

[Moses_jc]

I have a 2009 iMac that attempted to upgrade the OS and now comes up with a firmware error. Does anyone know of a fix for this error?

 

[rm5]

I had that error come up on my 2010 iMac years ago. I honestly can't remember what I did to fix it, unfortunately. Did you try Internet Recovery?

 

[Moses_jc]

I cann't get the operating system so not sure how I can try Internet Recovery. Do you have steps I can follow?

 

[rm5]

I cann't get the operating system so not sure how I can try Internet Recovery. Do you have steps I can follow?

Look at this link and follow the instructions, then you should be on your way!

 

[Moses_jc]

Command-R allowed me to do a restore from time machine. The OS is functional again for the moment. Not sure I should do any OS updates as the maching is getting rather slow. I may investigate is a SSDD can be installed to make it faster.

Thank you for your assistance.

 

[Fishrrman]

"I may investigate is a SSDD can be installed to make it faster."

Putting an SSD into a 14-year-old 2009 iMac will coax a little more speed out of it.
But the reality is, that it's time to be looking for a more modern replacement...