Flashing to Emmc s905x3

[phantom-j]

Hi,
I am using s905x3,
I have compiled yocto image with MACHINE=nexbox-a95x-s905
loaded to peddrive,
while i tried to boot it didn't boot

I have replaced files in boot partition with armbian boot partition files ,
it started working.

How to flash this image to Emmc & fix boot partition ?

[phantom-j]

And wifi drivers for my board not there,
board wifi chip is AMPAK AP6330