How to install the Android on Banana PI M3

I am facing issue while installing the Android 5.1 on banana PI M3. can anyone please help me

please see online gitbook documents;

I followed the above link, and when I power on my BPI-M3 it is showing a rectangle box and half of the box filled with green colour(it is just like a status bar)

Finally it worked for me.

But right now I installed youtube from Google Play store but while playing the videos I am not able to see the 1080P in quality options. it is giving only upto 720P in the youtube quality settings. I set my display to 1080P@60Hz but youtube video quality setting doesn’t show the 1080P option.