Installing to aftermarket mkey SSD, no OEM drive, old firmware.
I have on my hands a 2013 A1466. The firmware is Mavericks era. I've got a nvme SSD that obviously can only be seen by a Mojave installer. I've tried the trick to install to an external, but same thing happens as with the internal, “an error occurred while verifying firmware” after first reboot. I've probably done several other things I cant think of right now, but I've researched this til my eyes crossed and cant find a solution that works for me. I just feel like I'm missing something here so hopefully a second mind can help here. Thanks.
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