Nighthawk X4 R7500v2 - Changing VLAN Tagging ID gives 400 Bad Request error
Trying to follow guide here to bypass my CenturyLink "modem": https://kmwoley.com/blog/bypassing-needless-centurylink-wireless-router-on-gigabit-fiber/
Trying to edit the VLAN ID for the internet VLAN tag to anything (default is 10) takes me to a 400 Bad Request error. I've seen a few other posts from people about this issue with other routers and they said it was fixed with Beta firmware. I have the latest firmware for my R7500v2 (V188.8.131.52). Is there any way I can get access to the beta firmware that may resolve this issue.