If your physical buttons are malfunctioning, or you are already working within a command-line environment, you can use Android Debug Bridge (ADB) commands.
With the connection confirmed, type the following command into your terminal: adb reboot bootloader Press . How to Open Fastboot Mode on HONOR 200
★★★☆☆ (3/5) – Works as intended, but restrictions make it nearly useless for custom ROMs or deep flashing on this model. If your physical buttons are malfunctioning, or you
Keep holding the button until the screen lights up. You will see a distinct screen displaying the Android robot icon or text stating "FASTBOOT&RESCUE MODE" alongside the phrase "Please connect USB cable to your computer and open HiSuite" . If your physical buttons are malfunctioning
Press and hold the Volume Down button on your phone.
