Mac Pro 5,1 BootROM releases, from the oldest EFI update to the newest: ​

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BootROM Version Released with: Type: Note: MP51.007F.B03 Mac Pro EFI Firmware Update 1.5 General release First public released Mac Pro 5,1 firmware update, microcodes vulnerable to Spectre and Meltdown MP51.0083.B00 10.13 DP5 Beta Beta APFS support, microcodes vulnerable to Spectre and Meltdown MP51.0084.B00 10.13 DP6 and 10.13.0 General release Initial APFS support, microcodes vulnerable to Spectre and Meltdown MP51.0085.B00 10.13.4 and Mojave DP1 to DP3 General release APFS support, microcodes vulnerable to Spectre and Meltdown MP51.0087.B00 10.13.5 General release Missing microcodes and bricks the Mac Pro if you boot UEFI installed Windows 10 MP51.0089.B00 10.13.6 General release Spectre/Meltdown mitigated microcodes on the April 2 Microcode Update Guidance. 138.0.0.0.0 10.14 DP7 and 10.14.0 General release 5GT/s support for every PCIe 2.0 card 139.0.0.0.0 10.14.1 DP1 Beta minor updates and corrections 140.0.0.0.0 10.14.1 DP3 and 10.14.1 to 10.14.4 General release Native NVMe boot support, several minor updates and corrections 141.0.0.0.0 10.14.4 DP2 Beta minor updates and corrections 142.0.0.0.0 10.14.4 DP4 and 10.14.5 DP1 Beta Updated APFSJumpStart EFI module - W3xxx Xeon bricker.



This BootROM version was never released outside betas. 144.0.0.0.0 10.14.5 DP4 and 10.14.5 General release lot's of corrections, booting improvements, works with W3xxx Xeons.



This is the current BootROM release

For BootROM upgrades, please read the first post of the thread: ​

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade 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...

For MP4,1 to MP5,1 cross firmware flashing, see this thread below: ​