So flashing disclaimer applies.
1. Flash it trough recovery. To check open up a terminal on the device and type in "lsmod" if you see 'cifs' and 'tun' modules there that means it works.
2. If it doesn't work (when you don't see the 'cifs' and 'tun' in lsmod) mount /system partition before flashing
This is an update of my last .zip . This one has auto insmod. So you don't have to do the command everytime