A: Google only releases signed, official images. Custom builds (like Chromium OS built from source) are not recommended for recovery, as they lack the verified boot signature.
The official and safest way to obtain the recovery image for rammus is using the Chrome OS Recovery Utility (a browser extension from Google).
Alternative: Direct download from Google’s servers if you know the exact URL (not listed publicly for most models, but it exists).
Steps via Recovery Utility:
Direct download (advanced):
Google’s recovery image servers follow a pattern, but you’d need the exact Chrome OS version and hash. Without that, the utility is the only reliable official method.
If you have a specific need for the raw .bin file (for example, for use with MrChromebox scripts, virtualization, or imaging software like Rufus or Etcher), you can download the image directly without the Chrome extension.