If you would like to support our efforts to bring a full, fast, and beautiful Linux distro to ChromeOS devices, one way to help is to donate. Donations are used to cover server and hosting bills, to purchase new ChromeOS devices for testing and development, and to give back to projects we rely on. Thank you!
GalliumOS 3.1 was released on 2019-12-22. Release Announcement.
You can install GalliumOS from an installation image downloaded below, or you can dual-boot GalliumOS alongside ChromeOS by installing with chrx.
See the wiki for full instructions.
Also check our hardware compatibility list to make sure your device is supported, which build to download, and any issues reported for your model.
Please verify that your download matches.