A few days ago a new problem appeared. The camera do not switch on together with the car ignition. And some recorded files were corrupted - I could not open them with any player (eg. Windows Media Player, Pot Player or Gom Player). I downloaded again the latest firmware 4.35.220512 with Ambarella Direct USB but it didn't help. I noticed that the camera would switch off immediately when I switch off the ignition. And it is so in spite of the fact the battery status icon on the camera display shows that the battery is fully charged. The camera cannot be switched on when the external power source is not connected. So I suspect the battery is used up and it should be replaced. Am I right?