bases on the message, either
A) if your fw is a high level (8.1.0-9.X.X) then you might either have a bad nsp, or you may update your sig-patches for Atom.
or
B) if your fw is a low level (4.X.X-7.X.X) then you have found out what is the lowest fw need to install it as you may not have the necessary keys on your switch