That is correct. 4.9.9.1851 failed on 8 v2 cameras. Rendering them worthless. Loaded demo.bin of 4.9.9.1433 to SD card. The cams I’m able to reach to remove fail to reconnect to the app Very much resent that I have to climb all over the roof of my house in the middle of winter to fix these. Everything had been rock solid stable for years. My other 8 v3 cams are now calling for updates. That’s not going to happen. Oh, and my doorbell pro is more worthless than the $28.00 AliExpress one it replaced. Just a worthless doorbell that will not take a 64 character password, won’t take a micro SD card, and won’t send notifications, either on motion or doorbell press. Plus, I have to pay a monthly fee!