Samsung Galaxy Note 5 Live Demo Unit ( SM-N920X )

I have Samsung Galaxy Note 5 Live Demo Unit ( SM-N920X ) I want To Remove Retail Mode With Help Of Developers.
As I Already Successfully Installed Official Roms Of ( F ) Version On Live Demo Unit Of S5 , Note 4 And S6 Edge. Now I Want You People To Help Me Out In This Like Before

Thank You