Recent content by Cryptographer

My English is poor, I hope you can understand it. What's your Mac mini model? If you can see 970evo plus in recovery mode(disk utility - view - show all device )，pice card is fine. By the way, the firmware update system is unrelated whatever you installed HD/SSD or Not. You can use...

Before you replace original ssd, you must already installed macOS High Sierra(10.13) or above, to upgrade BootRom. Because High Sierra begin support nvme. Suggest install Mojave, it have lastest BootRom. After that, replace original ssd to 970 Evo Plus. Then you can use firmware Bootable USB...