I just wanted to let everyone knows I got the 1080p working by following the instruction on the following links : https://github.com/shadow-1/yi-hack-v3 .
One reasons is I have spend many hours searching on the net trying solve this but most of the information are for the 720p and NOT the 1080p.
Really need to thanks those guys that hacked this camera. Otherwise, I and everyone else who bought the Chinese version will ends up throwing it into the trash. Thanks very much whoever you are….
Hopefully, this information will help others.
Follow the above links instructions and you will make your 18CN works.
select the above circled.