Thanks, Martinayotte.
I searched my /dev directory and I see mmcblk0, mmcblk0p1, mmcblk1, mmcblk1boot0, mmcblk1boot1, mmcblk1p1 (nothing more concerning mmc). Where should I copy the bin file?
Is there some book/resource which explains why I do this?
PS: I made boot SD again and used nand-sata-install with option boot from eMMC.
PPS: I repeated your command as it is, removed the SD - system reboots due to panic.