MP 1,1-5,1 Current working 4,1 to 5,1 firmware upgrade?

[Oldmopars]

I have searched both here and with Google, watched several YouTube videos, and it seems the Netkas version of updating the firmware no longer works. I tried a method by Jensd_be, but after several attempts, it still failed to work.

Is there any other way to get this to work?

 

[Bigwaff]

Have you read this guide?

The Definitive Classic Mac Pro (2006-2012) Upgrade Guide

The largest/most-complete guide to all possible classic Mac Pro upgrades covering OS, Firmware, GPU, CPU, Storage, USB, THunderbolt and Network upgrades.

blog.greggant.com

 

[Oldmopars]

Yes, and I get the 5570 error. Watched this video twice, paused it 50 times, still nothing. Is this the only way it can be done now?

 

[Oldmopars]

I tried to follow the link in the post below, but the web site is now gone. All the info I am finding is old.