Ok to flash MP 4,1 > 5,1 after processor upgrade?

[Jethro!]

I just had my 4,1 2009 Mac Pro's processors upgraded from the stock 8-core 2.66's to the Xeon 3.33GHz W5590 4-Core x 2 (8 Total Cores). OWC did the upgrade.

Is there any reason why I should NOT flash the firmware from 4,1 to 5,1? Really need to install a newer OS, preferably 10.13.

Thank you.

 

[tsialex]

I just had my 4,1 2009 Mac Pro's processors upgraded from the stock 8-core 2.66's to the Xeon 3.33GHz W5590 4-Core x 2 (8 Total Cores). OWC did the upgrade.

Is there any reason why I should NOT flash the firmware from 4,1 to 5,1? Really need to install a newer OS, preferably 10.13.

Thank you.

You can flash it to 5,1 without problem, W5590 is a officially supported 4,1 processor and works with 5,1 firmware without problem.

 

[Jethro!]

Follow-up question...

Just discovered the flash utility requires an internet connection and I'm trying to flash an offline Mac Pro. Anyone know if there's a "full download" flash update available?

 

[kohlson]

There are instructions for this on nets.org. It involves having a couple of images available on the desktop. In my experience, I spent several hours doing the research on what to do, and the upgrade took 5-10 minutes. Very straightforward. But depending on what you have in place (OS, GPU) there's a different procedures (such as disabling SIP or not).

 

[handheldgames]

clarifying. forums.netkas.org

 

[h9826790]

Follow-up question...

Just discovered the flash utility requires an internet connection and I'm trying to flash an offline Mac Pro. Anyone know if there's a "full download" flash update available?

I don't think the flash utility now still require internet connection.

If you read through the entire post about that flashing tool. You should realise that the user now need to download the 5,1 firmware (from Apple website) and mount that on desktop by themselves.