i did a few boards with the style sdcard holder.

it is the upside down version of my one on the video.

so you indicate you know to flip the sdcard.

i notice the pins on the four jumpers are set to boot from nand not from sdcard.

i assume you had the jumper correct
and you could boot the sdcard.
i assume you then moved jumper back to boot from nand and then found out it never loaded.

please confirm.