Replace recovery.img with the actual file name of the CRDroid recovery.img you downloaded.
: For device-specific instructions and the latest builds, visit the official crDroid Installation Guides for a particular phone model? How to Flash crDroid ROM [Android 14] on Poco F5 crdroid recoveryimg install
: If fastboot devices returns nothing, check your "Device Manager" on Windows for "Android" with a yellow warning triangle. Replace recovery
: You cannot flash a recovery image if your bootloader is locked. crdroid recoveryimg install
Which (e.g., v10, v11) are you trying to install? Are you currently on a custom ROM or the stock firmware ?