netkas.org forum
July 22, 2018, 09:12:06 PM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Information for registering users http://forum.netkas.org/index.php/topic,2246.0.html
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: Cannot reboot to Mac Pro 4,1 to 5,1 update  (Read 122 times)
bensbb
Newbie

Offline Offline

Posts: 2


« on: July 17, 2018, 01:40:32 PM »

Hi all

I have a Mac Pro 4,1 that im trying to update to 5,1 so I can upgrade to 6 core CPUs

Firstly I had the error code 5570 but I resolved that by mounting the Apple EFI firmware update dmg before running the update tool

The tool says its successful, but when I reboot the machine I get the flashing light, then the long tone, but after I release the button I get the normal chime sound and then machine just boots back up into OSX, it doesnt do the update!

I read online it might be because of my GPU but i've tried with both an original Apple 4870 (that came with the machine) and a Mac bios flashed AMD 7950 that I have

Can anyone help?

Ben
Logged
bensbb
Newbie

Offline Offline

Posts: 2


« Reply #1 on: July 17, 2018, 02:55:59 PM »

I solved the issue by disable SIP Smiley
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!