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Firmware Update Mac Pro 4,1

T

Taipan

macrumors 6502a
Original poster
Jun 23, 2003
622
519
Hi! This has probably been asked already, but I can‘t seem to find it:
Last year I upgraded the firmware of my Mac Pro 4,1 to the one from 5,1 for Sierra. Now I just downloaded the final version of High Sierra, and at the start of the installation it says that it has to do a firmware upgrade for High Sierra. I‘m confused. Since my machine is not officially supported, why would it be offered a firmware upgrade? Does it do the same on an actual 5,1? And, most importantly, is it safe?
Thanks!
 
Taipan said:
Hi! This has probably been asked already, but I can‘t seem to find it:
Last year I upgraded the firmware of my Mac Pro 4,1 to the one from 5,1 for Sierra. Now I just downloaded the final version of High Sierra, and at the start of the installation it says that it has to do a firmware upgrade for High Sierra. I‘m confused. Since my machine is not officially supported, why would it be offered a firmware upgrade? Does it do the same on an actual 5,1? And, most importantly, is it safe?
Thanks!
Click to expand...
This is the thread you're looking for: APFS support enabled in High Sierra for cMP
 
Taipan said:
Hi! This has probably been asked already, but I can‘t seem to find it:
Last year I upgraded the firmware of my Mac Pro 4,1 to the one from 5,1 for Sierra. Now I just downloaded the final version of High Sierra, and at the start of the installation it says that it has to do a firmware upgrade for High Sierra. I‘m confused. Since my machine is not officially supported, why would it be offered a firmware upgrade? Does it do the same on an actual 5,1? And, most importantly, is it safe?
Thanks!
Click to expand...
i have the same question, is the Firmware Update safe for 6 core cmP 4,1->5,1 ?
 
Yep same situation. Let it go through with the firmware updates and it proceeded to install just fine. Took about 45 minutes total.
 
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