Though most of my cameras are a mix of 4K-T, 4K-X, 4K-T180, 5442T-ZE, and T5442TM-AS, I still use five N55DU82 around the house as a deterrent. I always test new firmware out on a spare camera before updating the others, and so today I uploaded newest firmware for this camera: 2.840.0000000.27.R...