Arris SB8200 cable modem requires password after Comcast update
Might Comcast pushing an update to my own cable modem have changed the modem's login behavior or overwritten the default login password?
On installation my new Arris SB8200 cable modem allowed viewing modem details on 192.168.100.1. Now the modem suddenly requires login credentials at 192.168.100.1.
Arris claims that a factory reset using the modem's reset button restores the default login, where user is admin and password is the last 8 characters of the serial number on the modem's label. However after a factory reset login is unsuccessful, using the default username and password.
A Comcast Business Support rep stated that Comcast does not update modem firmware, which seems most unlikely. So could a Comcast firmware update have changed the default user name or password after the factory reset?