: If the device vibrates, hold Power + Volume Down to see if it enters ColorOS Recovery . Phase 2: Technical Repair (Hard Brick Fix)

If the screen remains black and the phone only shows up in your PC's Device Manager as , you must perform a "Dead Boot Repair". Required Tools

: The cable was disconnected or the PC shut down during the flash.

: Occasionally, the stress of flashing can expose a failing internal storage chip (EMMC), especially on older units. Phase 1: Basic Recovery Attempts

: Hold the Power + Volume Down buttons for 15 seconds.

: A "dead" phone might just be completely drained. Plug it into an official charger for at least 30 minutes.