There is no worry about Knox on my build, because I deleted the bootloader from the update.zip. Additionally, if you flash the App remover from the XDA OP, you'll get rid of the rest of the crap that's in there related to Knox. Glad it's working for you @bshunt29. It is pretty sweet. And @johnbobie, if you installed with Kies, you are now stuck on 4.3, because you can not downgrade, nor can you flash custom roms. If you try, you'll most likely brick and have a very expensive paperweight. And no change is needed to any update script, just flash from the OP and enjoy