Originally designed for Haswell , Broadwell , and Bay Trail Intel-based Chromebooks, it has since been updated to support newer Braswell models and NVRAM firmware types. How to Use Cbwinflash.zip

Before any changes are made, the tool automatically backs up your current firmware to a file named fw-backup.bin .

Always ensure your device is plugged into a wall outlet during the flashing process to prevent power loss.

Before running the tool, you must open a Command Prompt as an administrator and run bcdedit /set testsigning on , then restart your device.

Do not run the executable from within the compressed folder. Extract the entire contents of the Cbwinflash.zip to a local directory to avoid checksum mismatch errors.