I have downloaded the image, but I can’t setup the wifi.
If I setup the Pi-Zero from Noobs, and install the firmware and setup the wifi according to this link, it works: http://www.instructables.com/id/How-to-give-an-internet-access-to-Raspberry-Pi-Zer/step4/Solution-4.
It is absolutely needed for the wifi to work.
The downloaded SDimage can’t be upgraded and updated according to the link.
Thanks.