No Video or OSD on the AET-H743-CH4 Flight Controller

My findings regarding the Betaflight OSD issue on the CH4 flight controller are as follows:

1. To enable the OSD chip, enter the following commands in the CLI: set osd_displayport_device = MAX7456 save
2. On the Modes page, USER2 switches the camera. It can be assigned to a radio channel for camera switching.
3.