
I would suggest that you do the system install with either Mojave or Catalina. You must install either High Sierra or something later to be able to use a third-party NVME as the boot drive.Īttempting updates through Mavericks aren't helpful (as you have discovered), your MBPro won't update to the newer numbering system until you install a newer version of macOS, and is just a waste of your time, when you really want to use the new NVME drive that you bought for that purpose. You can update to later firmware (which will then display the newer number format) by installing Mojave or newer, or just updating a Sierra system (or anything newer) with the last/latest security update.

Yes, your MBPro is displaying the old firmware format.
