Aaron Christophel has a YouTube channel in which he shows how to replace the firmware of P8 smartwatches with custom firmware, over the air.

If you like his work .... you could support him by subscribing to his channel perhaps.

https://www.youtube.com/user/12002230

https://www.youtube.com/watch?v=vbPz3WWBuJ8

https://www.youtube.com/watch?v=jgjKaSETY8Y

https://www.youtube.com/watch?v=4aFDjymXjOw

https://www.youtube.com/watch?v=KGFwQUxhCxc

https://www.youtube.com/watch?v=rRqulnz1nJM

https://www.youtube.com/watch?v=gUVEz-pxhgg

https://www.youtube.com/watch?v=c9KMUe6GVLw