F1C200S "Waiting for root device /dev/mmcblk0p3" issue

Hello! I try to work with F1C200S dev board and I’ve try to boot from SPI-NAND, but kernel parse this message to tty0: «Waiting for root device /dev/mmcblk0p3»

I’ve used this buildroot fork: GitHub - mangopi-sbc/buildroot-mangopi-r: Buildroot Package for MPi-R1 R2 R3 R3c ( F1C200s )

With this instructions all work done: MongoPi-R3 Micro Controller/Development Board Linux Wiki - DFRobot

What I do for uploading image to the device:

  1. Connect board with PC (BOOT button is pressed)

  2. Run this command in the terminal «sudo sunxi-fel -p uboot ./u-boot-sunxi-with-spl.bin»

  3. Wait, while usb device with 1f3a:1010 (vid:pid) was attached to the PC

  4. Run this command in the terminal: «sudo du-util -R -an all -D ./sysimage-nand.img»

  5. Disconnect device from PC, connect to the TTL USB port (BOOT is pressed).

  6. Connect to the tty with this terminal command: «sudo minimum -D /dev/ttyUSB0»

  7. Press «RST» button

After this steps, boot stopping on kernel message above.