@balbes150, good day!
I ran Armbian_5.77_Aml-s812_Debian_stretch_default_3.10.108_20190326.img from the SD card, then copied it to nand.
However, there was a problem. When I boot from the SD card, the system did not start without an hdmi cable until I removed the parameter "logo=osd1,loaded,0x15100000,1080p,full" from the uEnv.ini. It was in this configuration that I copied the system to nand.
But when the system starts from nand, in the Kernel command line I again see the logo parameter! And the system does not start without a hdmi cable. How do I edit the Kernel command line?
upd: solved the problem myself, thanks for the silence