I have owned three different Kn7000 and I try to live by -- "If it's not broke don't fix it".
In short if I am getting what I want what am I fixing? My short memory tells me that some were having problems after updating the O/S, nothing more.

There is very little out there that can effect the O/S of the Kn7, it has been set up beautifully so go with caution.

John C.