It is recommended to shut down and restart before flashing. Steps for MB860 to enter recovery: In the shutdown state, press and hold the volume down button + power button at the same time. A "red M" pattern screen will appear and fastboot will appear at the top of the screen. Release it. Use the volume down button to switch between Android Recovery mode and RSD mode. Use the volume up button to enter the corresponding mode

In the shutdown state, press and hold the volume up button + power button at the same time. Starting RSD protocol support will appear, which means entering rsd Mode