Mac Pro 5,1 Firmware upgrade issues (140 -> 141)

[eksu]

I'm having trouble updating my cMP from 140.0.0.0 to 141.0.0.0, and some other users were as well, so I thought I would start a new thread.


My cMP is a 2009 4,1->5,1 with dual X5690 and 96GB DDR3. I'm currently booting off of an NVMe SSD, and running Mojave (10.14.0).

I have tried updating my firmware with and without monitors plugged in, on a Vega Frontier Edition and a flashed R9-280X. I have two displays, both 3680x2160p, but one I can switch to Displayport 1.1 mode.

I'm going to try installing 10.13.6 onto a SATA HDD and then try to flash the firmware from that.

Let's try to figure out what the requirements are to run the new firmware installer.

 

[freqrider]

Don’t think Display Port is supported while in Flash mode? Think I read that somewhere? But could be only with Nvidia?

 

[haralds]

Displayport works fine in v1.1 mode.

 

[zozomester]

I'm having trouble updating my cMP from 140.0.0.0 to 141.0.0.0, and some other users were as well, so I thought I would start a new thread.


My cMP is a 2009 4,1->5,1 with dual X5690 and 96GB DDR3. I'm currently booting off of an NVMe SSD, and running Mojave (10.14.0).

I have tried updating my firmware with and without monitors plugged in, on a Vega Frontier Edition and a flashed R9-280X. I have two displays, both 3680x2160p, but one I can switch to Displayport 1.1 mode.

I'm going to try installing 10.13.6 onto a SATA HDD and then try to flash the firmware from that.

Let's try to figure out what the requirements are to run the new firmware installer.

Try to boot from Sata Hdd or Sata SSD and then start Firmware Update. It was a problem for me too.https://forums.macrumors.com/thread...e-from-140-0-0-0-to-141-0-0-0-failed.2175203/