First question :If i Push the three buttons of the camera together, the word download displays on the screen of the camera. and some files are written on the micro SD Card with the .info extension. I don(t know anything about it . But I suppose that if a downloading function exists, it is prehaps possible to update the firmware by this way.
Because I do not have acompatible smatphone android or Iphone to do it and it is impossible via a PC windows 10 or a Mac.