Going back to stock 4.0.3 from supernexus

So... been using supernexus build4 for some time now. nice rom, good work from Faryaab.

unfortunately, I need to flash it to stock firmware, warranty stuff...

any help would be apreciated. tips on safe flashing, safe kernel, wipe, etc...

I am on:

android version: 4.2.2
N7000UBLP4
3.0.31-cm-gfd46d49faryaab@build1 #1 wed apr 3 21:52:49 bst 2013
supernexus 2.0-n7000-build4
JDQ39