2013 Mac Pro Trash Can
I have a 2013 Mac Pro 3.5 Ghz and I was booting from a external drive. Something went wrong and I erased the SSD drive. I was running OS Monterey, but I can't re-install Monterey. I keep getting a firmware update is needed. I don't have the original OEM hard drive that came with it.
What can I do to get the Monterey installed again?
Mac Pro