Linux Lite Kernel

[m654321]

From Jerry: 4.7 Linux Lite Kernel is now available for 32 & 64bit machines.

I got the following output from my terminal when I attempted to install kernel 4.7 to "set-up (1)" in my signature. How to resolve this? Just want to check with you before going any further. As version 6 of the dependencies doesn't appear  to be available (5.9 indicated) should I install a kernel earlier than 4.7. Which one would you recommend?

Code:

W: There is no public key available for the following key IDs:
1397BC53640DB551
W: There is no public key available for the following key IDs:
1397BC53640DB551
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
linux-headers-linuxlite-4.7.0 : Depends: libncurses5 (>= 6) but 5.9+20140118-1ubuntu1 is to be installed
                                 Depends: libtinfo5 (>= 6) but 5.9+20140118-1ubuntu1 is to be installed
E: Unable to correct problems, you have held broken packages.

Many thanks
Mike