Lctech Pi F1C200S "Waiting for root device /dev/mmcblk0p3"

Hello! I try to work with Lctech Pi F1C200S 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: https://github.com/mangopi-sbc/buildroot-mangopi-r
With this instructions all work done: https://wiki.dfrobot.com/MangoPi_R3_SKU_DFR0780
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.
Logs and buildroot config in attachment
Hi!
It is not recommended to use a virtual machine to burn the image of the board.Please try the ubuntu host system.
