Has anyone done this?

I own a 2017 rx450h korean edition and what i've found after installing aftermarket carplay is that Lexus KR made a separate firmware for the rx450h in Korea.
Snd the dev who created this thought split screen would be cool and made it impossible to turn it off.

I just installed a 3rd party CarPlay module and this split screen would (1) cover half of the carplay screen (2) whenever i move the cursor over half of the screen then now both carplay and the original car screen would both activate by a single button. Annoying!


covers half of the screen


I want to flash this firmware to non-KR version but does anyone know how to do this?