There is no need, for us, to use the /lib/modules.. For Nemo installation I advise you not to think about it now, but maybe later, after a better understanding of boot of Harmattan/NITdroid. For NITdroid boot problem: did you put the NITdroid kernel file in the right place? Did you edited correctly the Ubiboot.conf file? Did you extracted the NITdroid system files correctly?