Lol sorry, if firmware was the only thing you got then it's best to not worry about that kind of thing.
Some people like to do things like replace the firmware of their router with a firmware that didn't come from the manufacturer at all, firmware that other people wrote. These people are crazy and will spend inordinate amounts of time performing tasks that reach arbitrary goals that have no value in the real world but satisfy some nebulous desire that only other crazy people can understand
In your case I'd just get a good router and don't worry about. I have a Netgear (
http://www.memoryexpress.com/Products/MX27696) and am happy with it.