csrutil disable
.csrutil disable
.sudo kextload /System/Library/Extensions/USBCDCEthernet.kext
sudo nvram boot-args='kext-dev-mode=1'
sudo kextload /System/Library/Extensions/USBCDCEthernet.kext
sudo nvram boot-args='kext-dev-mode=0
, and things will be back where you left them.csrutil disable
step turns off SIP for your entire system, which allows you to load and use the drivers. This also disables malware protection for your machine, and given that we've started to see genuine malware for OS X in the wild, it's a slightly larger security risk than it was in Yosemite.csrutil enable
, and things will be back where you left them.