The default username for Raspberry Pi is: pi

Password: raspberry

Step 1: Copy the CM4 Boot Firmware folder to the root directory of the Raspberry Pi

Step 2: Assign permissions to the folder：
             sudo chmod 777 -R CM4_Boot_Firmware
             cd CM4_Boot_Firmware/
			 
Step 3: Turn on the CSI camera and DSI display:
            sudo  dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp1-double_cam.dts
			#Note: When using DSI, HDMI1 has no image output. Even if you don't connect a DSI screen, 
			#as long as you compile the corresponding file, HDMI1 will have no output.

Step 4: Test the Raspberry Pi camera and view the connected camera image:
			sudo raspivid -t 0 -cs 0
			
How to delete settings
			#If you need to restore, just delete the corresponding dt-blob.bin: sudo rm -rf /boot/dt-blob.bin
			#Execution completed Turn off the power Restart CM4