MP 1,1-5,1 Failed Mac Pro 5,1(once 4.1) firmware upgrade to 144.0.0.0.0 version

[Sccjrd]

Hi there.

I've got this Mac Pro (once 4.1) upgraded to the firmware version MP51.0089.B00 and I'm trying to upgrade to Mojave and install the firmware 144.0.0.0.0 to get the boot from NVME option.

I've tried everything the guides online suggested me to troubleshoot.

I've removed every disk except fro the boot-able SSD, removed every PCI-E cards except for the Vega 56 that i need for the upgrade and also resetting the NVRAM and changing also the amount. I've also removed the Logitech receiver to see if it would cause problems but nothing to do

Just to let u know, as keyboard I'm using an old Apple one (A1243) and the Monitor is conected directly with a DP cable.

This are my specs but If anyone has a suggestion that would be lovely.

 

[tsialex]

Read the first post of the stickie thread, pay attention to each note:

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

 

[Sccjrd]

I've actually followed this guide, with paying attention to everything 😭
😭.

Thank you, it's written beautifully btw.

Is there any way to install just the firmware?

 

[tsialex]

You can't just flash the firmware, doing it all the serialization and fine tuning of sensors and ports from the factory will be gone forever.

The only workaround is the BootROM reconstruction service, I'll send you a PM with instructions/required files/service cost/turnaround time.

 

[tsialex]

Btw, did you measured the voltage of the RTC battery?