My zynq developed board is AX7Z100,so I need to make pynq sd image for my board. I used vivado 2017.4，petalinux 2017.4，pynqv2.2 from github，and I need bionic.arm.2.2.img. but I don’t know where to get it. Could some one help me. Thanks a lot.
Unfortunately prebuilt images are not available for very old releases of pynq such as 2.2. You would have to re-run the full image build on that branch of pynq. If possible I recommend upgrading to the latest image (2.7) as the most recent image will be best supported.