Mac Pro 5,1 Firmware Update issues

I'm trying to update to High Sierra on my Mac Pro 5,1 (2010, 6 core).

The updater says that a firmware upgrade is required. I've followed the instructions to install it and it appears to install but when I try to run the High Sierra installer again I get the same message about the firmware upgrade being required...

Has anyone else seen this?

I've tried removing all the PCI cards (other than the video card) and all additional drives but I still have the same problem...

Posted on Sep 27, 2017 5:21 AM

18 replies

chelidon

Level 1

28 points

Oct 1, 2017 10:29 AM in response to on_the_beach

All good here on Day 2 (except for the Boot Camp/APFS issue noted above)!

Oct 26, 2017 5:15 AM in response to acoop2

Restore back to sierra. HS not ready for prime time - pretty sure they didn't do much testing on our old machines.

Dec 12, 2017 2:19 PM in response to Adrian Smith2

I have the same problem, maybe bigger. I don't have the original graphics card anymore. Is there a way to do it with the new graphics card? My graphics card is an AMD Radeon HD 7xxx

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Mac Pro 5,1 Firmware Update issues