where is DE2_NIOS.sof? is it corresponding to the basic computer sof in DE2-115?

i am using DE2-115

and use tutorial in

http://www.cnblogs.com/oomusou/archive/2008/06/08/uclinux_de2.html

i use monitor program to write basic computer DE2-115 Basic Computer onboard.

is DE2-115 Basic Computer.sof = DE2_NIOS.sof in the tutorial?

if so, i can copy these basic computer files into ubuntu in virtual box to write into board