Can’t connect to WiFi please help!


I have had my 360 for several years but, have never used it. Finally decided to set it up and I get to a point where it tells me to update it. In order to update it I need to connect to WiFi-Linksys. The default passward for the linksys says 00000000. I try this password and it says it is not valid. I do know that the password needs to be at least 8 digits. Can someone PLEASE HELP? Thanks in advance!