ok a couple of more questions. can i restore my 4.1.2 nandroid if i go up to 4.2.1? i read somewhere that i couldnt. if i can could i flash a 4.1.2 rom (like cm) and then restore my nandroid? should i go stock then root (im assuming i can use the nexus toolkit with 4.2.1) or should i just wipe data and flash an aosp rom thats already rooted? thanks everyone!