Boot Ubuntu from SD Card?

I ordered my nano-pc t1 to have ubuntu loaded on eMMC by default.

It never would load.

I downloaded from: http://112.124.9.243/Copy/NanoPC-T1/sd-rom.7z and it
took 2 days to download.  Amazing that connection remained.

I imaged to SD Card and experimented how to get the system to load from SD
card by holding down BootSEL momentary switch while power is applied.


NOW.  How do I get it to boot from SD by default.

Or, if there are instructions about how to load SD card OS image into eMMC
memory.

Also I'm trying ubuntu on sdcard, but the screen still black even if the
NanoPCs is on.
I think it's a problem of screen resolution of my tvs, the only way to know
for sure is to have a cable "TTL To RS232 Modulo" that have not purchased
:-(