My way back to GB (similar to most advices here on the board):
- flashed a EU wipe pre rooted ROM for PC Odin from here
(3*Files Wipe N7000XXLC1_N7000OXALC1 Open Europe (02/03/2012))
- used Dr. Ketans Guide to make everthing like it was when I started my note flashing career in january
--> flashed SGN_XX_OXA_KJ1_FACTORYFS + CF-root.
I donīt know if this makes sense, but as I do have a nice running GB again, it made sense for me at least