Can’t get switch back to USB

[Onesmiff]

Hi

i have a new tv and am trying to optimise the picture. I have a video on USB with colour cards etc which works ok except once I’ve gone into TV settings I can’t get back to The USB to continue watching. 

TV is XF75

How do you get back to the USB? 

[Onesmiff]

Hang on, I just found how to do it. 

There i I was looking for USB but what I needed to be looking for was “video” which comes in the Apps section when you press the home button. 

Madness!!!