i had similar concerns when the C8 and associated firwmare came out.
Many users experienced problems with the updated system and i held back (though i think most people got sorted with the help from these forums)
I was advised that if its working and is stable there is no real need to update so have followed this-
We are not missing security updates like a PC/Mac OS, just additional functionality or new drivers for devices, is how i understand it. I would rather avoid any potential headache trying to fix something and wish i'd left it alone. (if it aint broke dont fix it)
