If anyone did experince issue "-8602"..., then i need a permanent solution to get rid of the poor tracking for good.
So after the previous window update fixes it, the sensors are back to normal... then two weeks later, sensors' old dead issue suddenly got resurrected and keeps disconnecting, then connect, then it keeps going on. no matter i tried everything to fix from the youtube, the issue won't go gone. i think it might be the software, or sensor drivers, or bandwidth either.
So any suggestions to fix it?