Exclamation Updating to Deodexed ROM from Odexed ROM

Hey guys,

I am currently on the rooted DDUEML4 (4.3) firmware on my Galaxy Note II (International). I want to update to a custom ROM but that ROM requires initally to be rooted on a Deodexed ROM which I'm not on.

Please help me.
Any help will be appreciated
Thnx