WOW nice to hear Congratulations!!! (you got a NAND-tut? ) I'm on 256MB NAND too, but all dumps were shown as invalid in "cex2dex.exe". So I used Preloader Advance to dump, and there it was, the extracted metldr.
Just installed Linux on internall hdd (I used the eighth-pup) I stucked on the make-command, so i switched from live-cd 2 installed-on-hdd. Now i'm downloading linux-2.6.tar.gz to get the missing commands...
apt-get install make
apt-get install wget
apt-get install gcc
apt-get install libncurses5-dev