[HOW TO] Make Nook App work under HC emmc (and other apps needing sdcard access) - xda-developers
Make sure you've turned off the cell standby and telephony services as indicated at this link:
[SCRIPT] Remove Cell Standby Service (Super...
Are you saying that I can upgrade the nook software to 1.5 after I have rooted the 1.0.1 version without messing up the root?
Separate names with a comma.