Now I know for sure your not in IT...
First off, it doesn't help anyone to tell them they "Shouldn't have upgraded" if they already have. Second, there might be other reasons to upgrade (increased performance and the general idea that later versions of firmware are actually better, like with the professional brands.)
Also, you have provided no solid "proof" that you are "in IT" Defending a frauded company proves nothing. All you ever do is tell people they did "Something wrong".. That proves absolutely nothing.
Also, what all does it matter if I am "in IT" or not? Your record-low karma sort of shows the general opinion of you here.
Your router working doesn't mean you are more skilled than others, it simply means you were lucky enough to get one that works.. You are such a clown.