my problems started when my remote would not charge and after reading some of the comments on the forum and after some experimenting I figured out it was not the battery. so I borrowed a remote from a friend that had one but cant get it to pair? I thought it might be because I haven't done an update. but i cant get the drone or remote to update so I was going to try to update the drone on the desk top but now I cant find the assist2 app to down load can anybody tell me where to find this app?