I have a late 2013 Mac Pro that had been running Sierra before its internal SSD died. I'd like to replace the internal drive, but OWC's site indicates the following:
"macOS 10.13 and later versions include an EFI (firmware) update that adds support for the Aura Pro X to the host computer. If you do not first update the host firmware by installing macOS 10.13 or later onto the existing SSD, the Aura Pro X will not function properly once installed."
Is there a way to get the Mac's EFI updated using an external drive so it will be able to make use of the replacement internal drive?
Internet recovery allowed me to do a fresh Mavericks install on the machine, and I'm currently updating it to El Capitan, from which I'll hopefully be able to get Sierra running, but I'm expecting that High Sierra will give me trouble on the external drive.
Any recommendations? Thanks!