Thanks for updating the docs. It does look different from the real item received. There are two cables instead of one. With separate cables there is always a chance to connect it with the wrong side. What will happen then? I’d better use the product listing pictures. This one is missleading.
I would ask to include also description of requirements, conditions how to make it working and links for appropriate FW.
I got the LCD working with 4.9, but I do not agree with your wording. LCD works only if the Ubuntu 4.9 installed in eMMC. If you do not have 4.9 on eMMC (e.g. Android on eMMC), LCD will not work.
Frankly speaking, only LCD makes sense mainly for Android, because otherwise everything is too small to use touchscreen.