I have two C425 V1.0 cameras bought together in the same package. Both work just fine on Firmware V1.3.9.

Camera 1 is always on and requested a firmware update to 1.3.10 which I enabled and the update was successful.

I then turned on Camera 2 which is normally off. I checked for an update and keep getting advice that its 1.3.9 is up to date whnever I check.

Am I missing a step?

Cheers.