RockPi 4A+, How to create image (*.img) of eMMC?

Is it possible to create image (*.img) of eMMC memory on RockPi 4A Plus?

Yes, use pv or dd and the device begins with mmcblk. You shouldn’t be booted from eMMC.

The backup script can generate a image from eMMC or SD card to an external USB Drive. Then you can dd the image on the USB drive to any same device.