Doubts Miao Miao 2

People, let's see if someone has an idea about Eno is recognized by the Tomatosto application.I received a new mm2 and I wanted to use it for about 6 months after receiving.I try to load it but I don't know light the light and obviously the Tomato application is not recognized.Someone happened to someone?Did the battery die?Is there a way to change it?

Try to have it to reset it with the loader connected to see if the red light is turned on, because I do not know how to change the battery without taking off the tapas

I think that on many occasions it gives problems because the mobile operating system needs to be updated.At least to me many times the problem was this.