rooted 4.2.2 - want to update to latest
hey guys, i'm currently on 4.2.2 with root (SuperSU + boot to recovery disables write protection). after rooting it, i stopped keeping up with everything, so i never did any of the updates. however, i'm at a point now where i wish to update to the latest, and i'm hoping someone can help me with the steps i need to take to do that. i think i need to unroot and then update, but not sure how. thanks.
Atrix 4G - rooted, locked
Asus Nexus 7 - rooted, locked