I have a TD-W8901N V1 . It was working well, last night i saw a new update for the firmware, i did the update properlly, it went fine. After the router reboot i am not able to connect to it. as it was giving message says windows cannot connect to this network, so i rebooted the router again, & tried to connect, then start getting message security key miss match. I am 100% sure that i am putting in the right key in. So i tried to reset the router by holding down the WPS button. All the lights blink after 7-8 sec & no changes..Not even able to reset the router.