If you prefer to download the image directly (similar to an ISO) to use with tools like or BalenaEtcher , you can find the official raw disk images on the Chromium Dash Serving Builds page.
If you absolutely need an (not Google’s bin format) or want Android app support, you should look at Chromium OS builds from third-party developers. Google Chrome Os Download Iso 64 Bit
For a full list of officially supported hardware, check the Certified Models List. If you prefer to download the image directly