The official way to get ChromeOS Flex is through the Chromebook Recovery Utility extension for the Chrome browser.
Once your bootable USB is ready, follow these steps to install: Chrome OS Flex DOWNLOAD and INSTALL Using ISO Like File! chrome os flex download iso 64 bit exclusive
: Insert a USB drive (8GB or larger). Select it from the dropdown and click Create now . Downloading the Direct Image (Bin File) The official way to get ChromeOS Flex is