Arduino Nano Clone on OS X Yosemite

 After subconsciously try it on my debian machine about a week, now when I have a chance to write on arduino IDE on my Macbook, it wont upload the sketch, no port for nano.

installing FTDI driver didn't help because it use CH340G chip for com.

Grab the driver from http://www.wch.cn/downloads.php?name=pro&proid=178

install it

restart,

no change, :(

found out that we have to run this on terminal

sudo nvram boot-args="kext-dev-mode=1"

reboot,

yup, the life is easier again, :)