yeah it's funny, with original disk, dnas detects your modchip but with patched game , it can't see your modchip
forget about ultraiso, you need cdmage & cd/dvdgen. cdmage opens only ISOs larger than 4GB (socom2, MOH Rising sun) and for other games smaller than 4GB, you should rebuild the image with cd/dvdgen.
you should patch socom2 only with cdmage otherwise you can't get pass dnas checking.