The projector is suitable for ceiling mounting, but I have no specific information on whether the image can be rotated 180°. You should consult the instruction manual or manufacturer support to make sure this function is available.

The OS is Vidaa

Yes

As this projector was developed to be placed on a table or a special piece of furniture, wall mounting is not usually intended and would not guarantee optimum picture quality.

Netflix yes, it's even on the remote control. I've never used Zattoo.

This item is on sale and no longer available from the supplier. We therefore regret that we no longer receive any information on this item.

Yes, the screen is included in the scope of delivery.