Nano CH340 no ports to select

Chinese knock off nano. I used it like 6 months ago with 0 problems. I have a mac running OS high sierra. I have the latest version of the IDE. I burned the bootloader using an Uno with jumper wires. I installed the CH340 drivers. I tried selecting the old bootloader.
When I hover over 'ports' all I get is /dev/cu.bluetooth-incoming-port. no matter what I do. I cannot select the nano. I have tried 3 different cords. Please, I am begging for an answer. Is there something I have missed??? I also tried a fresh nano from the same batch, also not working. But the original one worked fine awhile ago???!!

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