Leo smiled. “Told you. The ISO was the key.”
sudo mkisofs -o chromeosflex.iso -V "CHROMEOSFLEX" -b syslinux/isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table /path/to/mounted/raw download chrome os flex iso
Google throttles downloads during peak hours. Use the Chromebook Recovery Utility—it handles resuming automatically. Raw .bin downloads via browser may fail; use a download manager like wget -c (Linux/Mac) or Internet Download Manager (Windows). Leo smiled
Launch the utility, click Get started , and select Google ChromeOS Flex from the manufacturer list. click Get started