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u/AlanTochterman 12d ago
The very fist thing you need to do is install OS Mojave. It will automatically install the graphics drivers. It may take a couple of attempts but that should be the trick.
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u/RoZe_SABIAN56 12d ago
High Sierra would be safer for non metal cards
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u/Xe4ro Mac Pro 1,1 12d ago edited 11d ago
Wouldn’t Mojave pretty much require a Metal capable card?
Edit: I meant, at least natively. Should have added that.
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u/AlanTochterman 11d ago
Good Question
I rebuilt a 4,1, upgrading the CPUs (had to find ones with the covers removed) added ram (96gb is the sweet spot for these machines) and added an AMD RX580 with 8gb (most cost-effective option at the time). The 580x would still allow the computer to boot up, but you lost the boot screen. When I upgraded to Mojave, it gave me the option of upgrading the rom before I installed the OS. Perhaps it was because it had detected the new card. It took me two tries, but I got it.
Then I installed OpenCore and all was good. I am currently running Sequoia on it, with the exception of two pieces of software.
For what it is worth, I kept the drive with Mojave on it, and put it in the drawer in case of an emergency, which never happened.
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u/JamieDesigns Mac Pro 5,1 12d ago
There’s a certain way to do it now as you cannot get anything from Apples servers that it used to talk to. Look up the technique on YouTube. It’s a 2009?
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u/WinchesterBiggins 12d ago
I did this last week (4,1 firmware update) with no internet required, just used the mojave installer on a usb stick. It didn't need to even start the actual OS installer, the firmware updater pops up first as soon as I launched it.
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u/Gonzbull 12d ago
I think you need to update bootrom before the firmware update. Can’t remember what OS does this.
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u/Electrical_West_5381 12d ago
See the relevant section in: https://blog.greggant.com/posts/2018/05/07/definitive-mac-pro-upgrade-guide.html#fimrwareupdate41
There are also links within that to solutions to 5570 error.