Comment by EquallyJust

For what it's worth, I just fired up my two portal gen 2 in the closet, updated them and the adb setting just worked. The adb UI is a little jank and doesn't appear to enable but it does actually work. Got them set up as Home Assistant dashboards

I'm a Meta employee so who knows if I'm in some magic gatekeeper but ADB definitely didn't work on these even as an employee before