X20 Pro have 4K output problem

Hi All,

My X20 Pro suddenly have 4K display output problem. When you select 4K output, the output signal will keep interrupt until you changed back to 1080P. Do you know why and how to fix it.

Appreciate for your advice.

Thanks and Regards,

 

I tried factory reset and downgrade the firmware does not work....

 

Hello there. Unfortunately I have the same problem. If I set above 30 fps, I cannot get a picture on the TV. There was no problem before. Now I keep getting errors.