I have this router for a couple of years, always working fine. Then my cable TV/Internet carrier company came to change the cable modem for a newer and faster version. It worked fine for a couple of days but then the DIR-860L started to be unstable. I power off and power on, I disconnect the power cord, etc, and it always follows all the boot sequence, connects, both lights go green (power and internet) and a couple of seconds later the internet light goes orange and keeps blinking (and for sure I lose connection).
Any suggestions? Should I change something, or reset, or renew firmware, or whatever? Any clue you give me will help me.
Thanks in advance.