This is a worry. That seems to be last f/w update (TI_UN9-180720-V5.0) for the T5 EDGE standard version (S/N is date related).
I get a different version f/w (TI_UN9-181122-V5.0) for new T5 EDGE "LIVE" version cam. Apparently some added hardware so f/w not compatible and why you can't access the...