Video resolution not changed

Hey,
after changing resolution to 1440p camera is still using 1920p.
Revision is Z23L, version is 1.5.6.

I copied enable_info_display.script and xyc.sh to top level of SD card and change permission.
After that camera starts with extra beep. I changed the resolution and restarted cam.
Without connecting again via app, I started recording but the video is still 1920p.

BTW: bitrate is not changed, too.