(SOLVED) NEO CORE BOOT FROM EMMC

[sami]

first i was able to boot my nanopi from SD card and i was able to access it through SSH.
then i was trying to boot my nanopi from EMMC but it was not booting.
I already installed a different OS which is specialized for Eflasher (nanopi-neo-core_eflasher_friendlycore-xenial_4.14_armhf_20190522 ) .
then i followed the steps carefully: http://wiki.friendlyarm.com/wiki/index. ... i_NEO_Core
note : i was using commands since there is no HDMI.
I typed : eflasher then i choose 1 and typed yes and waited until the OS was installed successfully and finally i powered off the nanopi, removed the SD card as mentioned, tried to power it on but i could not access it again through SSH anymore.

I would if someone could help find the problem.
or if someone would post the detailed steps to boot the nanopi NEO CORE from emmc.

thanks in advance

[sami]

1-ENTER THIS WEBSITE. https://www.armbian.com/nanopi-neo/
2- DOWNLOAD ARMBIAN BUSTER. (DIRECT DOWNLOAD) ,note: this is an OS FOR ALLWINNER H2 and H3.
3- UNZIP FILE.
4- “WRITE” image file to the SD CARD.
5- Boot the nanopi NEO CORE. With user as root and password 1234.

NOW IT IS BOOTED FROM SD.
To enable to boot from EMMC continue the following:

6- Update kernel using two commands:
apt-get update
apt-get upgrade

7- run command:
armbian-config utility

8- Choose:
i-system settings.
ii- Install to/update boot loader.
iii-Install/Update the bootloader on SD/eMMC.

9- run command:
nand-sata-install

10- choose:
i-boot from eMMC / NAND, system on eMMC/NAND
ii- ext4.

11- After done power off then remove SD card and power ON.