If installing to an SD card download this file
https://feeds.braiins-os.org/braiins-os_am1-s9_sd_2019-06-05-0-0de55997.img

If installing directly to the controller via a web browser use this
https://feeds.braiins-os.org/braiins-os_am1-s9_web_2019-06-05-0-0de55997.tar.gz