Upgrade Mac Pro 4,1 to 5,1 in 2024 - Workaround for Mac Pro 2009-2010 Firmware Tool issues

In this video, I will cover the firmware upgrade process to bring an Apple Mac Pro 4,1, also know as the Early 2009 model, to a Mac Pro 5,1, known as the Mid-2010 model. Unfortunately the known tool called “Mac Pro 2009-2010 Firmware Tool” from the netkas.org forum is no longer working properly. I found a way to workaround the issues where the firmware upgrade would not start and instead of seeing a progress bar, macOS is simply booting instead. This works for Mac Pro's that are on bootROM version MP41.0081.B07and MP41.0081.B08 as well. I'll also cover the issue when trying to run the tool using no open MacProEFIUpdate.dmg, it would fail with “The program has encountered an error: 5570”. Resources: Full explanation on my blog: jensd.be/2453/apple/apple-mac-pro-41-firmware-upgr… 4,1 firmware (FW14.dmg): support.apple.com/en-us/106656 5,1 firmware (FW15.dmg): support.apple.com/en-us/106455 Mac Pro 2009-2010 Firmware Tool.app: jensd.be/download/macpro2009-2010firmwaretool.zip Modified version of ExtractAndPatchEFIFiles.sh: jensd.be/download/ExtractAndPatchEFIFiles.sh Video that covers upgrade to BootROM version 144.0.0.0.0 :    • Apple Mac Pro 4,1 and 5,1 - Dual CPU ...   Chapters: 00:00 - Introduction 02:19 - The problem 04:02 - Troubleshooting 06:38 - The solution 07:36 - Step by step 08:13 - Disable System Integrity Protection 09:00 - Run Mac Pro 2009 - 2010 Firmware Tool 09:34 - Download 4,1 and 5,1 firmware files 10:27 - Convert and mount firmware with unique name 12:12 - Replace ExtractAndPatchEFIFiles.sh 13:15 - Run modified script 14:02 - Run script to do EFI preparation 15:12 - Perform firmware upgrade to 5,1 16:51 - Upgrade BootROM to 144.0.0.0.0