AVT 1800 Rotation Screen to Portrait

[Hashan 0]

AVT 1800 Rotation Screen to Portrait

I Bought AVT 1800  TV Box for develop Currency Display Board. Therefore I need to change screen to Portrait Mode

Earlier I have AVT585 Unit and it can easily change it. Due to that I bought this new product thinking same feature are available in this product also.

But now I'm stuck with this problem

Please Help me !!!!!!!!!!!!!!!!!!!!!!!!!!!