This issue occurs because your TV does not support the higher resolution.
STEP 1
Switch off the power for your box and make sure that the adapter’s power light is off.
STEP 2
Switch on the power for your box and make sure that the adapter’s power light is on.
STEP 3
Press the standby button repeatedly after switch on the power.
The Startup Options screen will appear on your TV.
STEP 4
Press ‘987’ to access the Advanced Startup Options menu.
Then, press '1' to initiate a reset setting.
STEP 5
Press "OK" to confirm restore to factory setting.
STEP 6
After the factory setting is restored, TV will turn blank.
Please wait until the box completes initiate setup.
STEP 7
Press "1" to initiate Linux download on the software.
STEP 8
Once completed, the following screen will appear on your TV.
Refer to Installation Setup guide here to complete the setup.
