Hi iam on ucuamdl firmware on att sgs4, which is rooted by moto-chopper root method.. I want to update to android 4.3 mk2... iam not interested in custom roms but just want to retain root when I shift from mdl to mk2. Also my phone is sim unlocked, it wont be affected ryt?.... also when I connect my phone to kies.. its says latest firmware.. even though I dont have one.. what could be the reason? I have cwm as recovery. Please help! Should I used odin and directly flash the files or is there something i need to take care of?