kyle 
simple basic question.. 1.Manual told me to use sd-flasher to FLASH superboot.bin to my sdcard. Can I use other such as uboot? Has anyone tried? superboot is a closed source so i cannot find what it is doing. 2.http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web... from here, at page 26, they mention bootstrap(primary bootloader). Is it already installed in NAND flash in manufacture? If the board boot from sd card, sd card dont have bootstrap. How the board boot? Explain in bootstrap is in this blog: http://sanket-friendlyarm.blogspot.ca/