Don't know. I would like to know the same thing myself. I will say this about Humminbird, these updates should never be released until ALL kinks and troubles are worked out. I have already downloaded the 6.180 once and replace it with the previous software that is before the 6.180 . I never had much trouble but with one problem and that was it messed with my Weather Sense and XM Weather. Hopefully someone can give us some answers soon.