I bough some Nano V3.0 ATmega328 16M Micro-controller CH340G Boards a few years ago and had them working fine (after installing a Chinese Driver).
I am now trying to upload some new code to one of the Nano's but the tty port is no longer visible in the Ports menu in the Arduino software.
I think that since I last used these boards I may have upgraded my Mac to OS X El Capitan (no 10.11.6) and after researching this it would appear that the original Driver no longer works.
I have downloaded the driver mentioned but it still does not work. I also think I went through disabling kext driver signing before as when I run:
I get the message:
System Integrity Protection status: disabled.
In Arduino I have selected:
Board = Arduino Nano
Processor = ATmega328
Programmer = AVR ISP
I am using the cable that was supplied with the Nano (worked before).
No matter how many times I try to install the driver (the old one or the new one) the port is not available.
Any help getting these low cost board up an running again would be a great help.