Accessing admin on 5G gateway without the app

From view-source:http://192.168.12.1/static/js/main.[8 hex chars].chunk.js:

Looks like there are some login controls under:

http://192.168.12.1/TMI/v1/auth/login

That is not an HTML page, however--JS needs to be invoked

Configuration can be found under

http//192.168.12.1/TMI/v1/network/configuration?get=ap and

http//192.168.12.1/TMI/v1/network/configurationv2?get=ap

but both require the auth tokens before accessing

Version information:

http://192.168.12.1/TMI/v1/version

Some additional HW info:

https://tmo.report/2021/12/this-is-the-new-t-mobile-5g-home-internet-gateway/

https://github.com/chainofexecution/Arcadyan-KVD21

I will keep digging, but that should help anyone who wants to get started