https://chromiumdash.appspot.com/serving-builds?deviceCategory=Chrome%20OS%20Flex
https://dl.google.com/dl/edgedl/chromeos/recovery/linux_recovery.sh
https://chromium.googlesource.com/chromiumos/user-recovery-tools/+/master/linux/recovery.sh
Quelle: https://support.google.com/chromeosflex/thread/153768896/chrome-os-flex-iso?hl=en
Here are the instructions for the Linux script:
On the Linux computer, download the Recovery Tool. Change the script permissions to allow execution with the following command: sudo chmod 755 linux_recovery.sh Run the script with root privileges with the following command: sudo bash linux_recovery.sh --config https://dl.google.com/dl/edgedl/chromeos/recovery/cloudready_recovery.conf Follow the on-screen instructions to create recovery media. To continue to recover your Chromebook, follow the steps above.
I added the --config https://dl.google.com/dl/edgedl/chromeos/recovery/cloudready_recovery.conf part above so it would get the 'reven' image.
https://www.linux-community.de/blog/iso-images-mit-grub-2-booten/