Thanks, You're right! This camera doesn't support onboard dewarping and also my Dahua 4k NVR NVR4104HS-4KS2 doesn't.
I must switch to a NVR5208/5216/5232-4KS2 to dewarp only 1 camera at time or use SmartPlayer from Dahua to dewarp NVR recorded playback.
Damn!
Is there any Android RTSP viewer that manage fisheye camera and dewarp live stream?
Best Regards
S