I just got a SABRE development board and was trying to flash NAND via USB. It didn't work. After poking around a bit I found that the code in ucl2.xml regarding NAND was commented out with the text "Because NAND conflicts with SD on ARM2 CPU board, NAND is not enabled into ARM2 by default.". I do not really understand what this means. I would very much appreciate if someone could explain this to me. What is the conflict? And is SD a short for SD card interface, or am I way off in thinking that? Later in the .xml-file the ARM2 User Guide is referenced, but a google search doesn't provide anything interesting there.