So back in 2012 i got a new router(D-link 655 rev b1 eu). Basicly after shortly setting everything was good and online gameplay on xbox was amazing AND got even more amazing after i was able to assign 80% bandwidth to udp packets from my xbox. Back then i had 25/1 in capacity now i have 100/100 optical fiber with a different ISP. But since i upgraded my firmware to 2.05 QoS seemed to stop work. Is there a way i can reset to the factory firmware?