Install to sdcard using qemu tools (compressed image) :

  lsblk # look how usb disk's device name check for size
  disk=/dev/sdZ # replace sdZ with real one (CAUTION)
  time qemu-img convert -p  -O raw  *.qcow2 $disk

This should be ok and validate that your RPI can boot our shared image.

If unclear ask for support , thanks

You can stop now or build it from scratch.

Install GNU/Linux and setup some tools

sudo apt-get install git make # if using deb based distro

which git
which make

Let's try to rebuild all with a single make command :

url=https://github.com/TizenTeam/meta-yocto-demos
git clone -b sandbox/pcoval/raspberrypi0 $url
make -C meta-yocto-demos

Deploy image to sdcard

lsblk # look how usb disk's device name check for size
disk=/dev/sdZ # replace sdZ with real one (CAUTION) 
sudo dd if=$file of=$disk bs=8M oflag=dsync