STEP 1  

Press "HOME" button on your remote control.

STEP 2  

Navigate to Settings and press "OK".

STEP 3  

Navigate to Display and press "OK".

STEP 4    

Navigate to Resolution and press "OK".

STEP 5    

Navigate to your preferred selection and press “OK”.

STEP 6    

Select Yes, continue and press "OK" to confirm on the changes.    

Otherwise, select No, go back to cancel.