[Q] 180-degree rotation topic

180 Degree Rotation:

I'm using eXistenz v 4 (Android 4.2.2). Yes, I'm still using the old version since I haven't have the time to do it yet.

Can anybody teach me how to enable 180-degree rotation? I have set-up auto-rotation but the device only rotates 0-90-270 degrees. I want/need 180-degree rotation to be enabled.

Thanks.