Mac Pro Firmware update 2009 to 2010 not working

[iamMacPerson]

That's cool... I know this a little older thread... but do you happen to know which plist? Which OS versions?

More in line with the thread. Disabling SIP, then doing the Firmware update process works. I re-enabled SIP... but that probably isn't required.

Be careful. Messing around in these files and not knowing what you're doing could cause your system not to boot. PLEASE make a full bootable back up before attempting to change anything.

All the info you will need is right here. I did it under 10.9 IIRC and it has stuck through 10.11 so far. If you're doing it under 10.11, you will need to disable SIP.

 

[mac8867]

Be careful. Messing around in these files and not knowing what you're doing could cause your system not to boot. PLEASE make a full bootable back up before attempting to change anything.

All the info you will need is right here. I did it under 10.9 IIRC and it has stuck through 10.11 so far. If you're doing it under 10.11, you will need to disable SIP.

Thanks man... think I am good. ;-) But I agree with you, If you do not understand the purpose of SIP, or the files it protects, read up on them before trying at home.

 

[DPUser]

I just popped in a backup 10.8 boot drive, booted and updated from that.

 

[Threatnique]

hey I've replaced my card now with the stock one it worked after the same head scratching , after I install my new CPUs is it ok to put the gtx750 back in ??

I ask because why when this was in it would not upgrade firmware ? I don't want to put the CPUs in , then the non apple card and it then breaks down and melts into fondue....