There is a stickie thread exclusively for this topic. Please read the first post.@tsialex
Just finished going through this awesomely long thread, Would like to thank you for your time and patience....
Have a Mid 2012 MP5,1 with a Radeon 8Gb RX VEGA 56 running Catalina using Dosdude's patch, the latest native MacOs is High Sierrra 10.13.6 but the Boot ROM wasnt updated it still is MP51.0087.B00.
I would like to update to 144.0.0.0.0 so
can I do it thru the macOSUpd.RecoveryHDUpdate.pkg described on #1,569 or should i try to reinstall High Sierra, mojave, path?
If macOSUpd.RecoveryHDUpdate.pkg is a go, can i do it from the High Sierra MacOS or do i need to upgrade to Mojave? and do i still need to disconnect/take out all drives, 4k monitors, pcie cards?
Thank you
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...