MP 1,1-5,1 Flashing an RX580

[Raphaël10]

You can get more info directly with cmizapper or read the post I did earlier today in the main BootROM thread answering to questions about it, use the search there for previous posts.

MattCard Mac desktop

MATT cards are not plug and play, you'll need to flash your own Mac Pro BootROM to the card after you get your Mac Pro booting again. The mid-2010 BootROM flashed to it by cmizapper won't work for Apple services since is a clone widely used. So, you need the MATT card + the BootROM reconstruction service.

A replacement backplane or even a barebones Mac Pro will probably make more economical sense for some people.

Wow. With this price, I think it's more cheaper and perennial to buy a classic motherboard and make an Hackintosh.

 

[tsialex]

Wow. With this price, I think it's more cheaper and perennial to buy a classic motherboard and make an Hackintosh.

Perennial is a word that I’d never use with hackintosh, Apple will stop supporting Intel processors sooner than later, probably in one or two years since the last Mac with Intel stopped to be sold back in 2020 and Apple usually supports 5 years after the last date available.

 

[Raphaël10]

Yes. I wanted to say perennial because I could always use Windows on this machine.
Are you sure that there is not another way to save my Mac pro ?

 

[tsialex]

Yes. I wanted to say perennial because I could always use Windows on this machine.
Are you sure that there is not another way to save my Mac pro ?

Read the "What to do if during the upgrade process your Mac Pro bricked:" section:

MacPro5,1: What you have to do to upgrade to Mojave (10.13/10.14 BootROM upgrades instructions thread)

Please fully read this first post, you will probably find that you have one or more problems described into the various notes below. Mojave will only install if you have upgraded your BootROM to the current release and your Mac Pro have a Metal capable GPU*. If you are trying to install Mojave...

forums.macrumors.com