[BaritoneGuy]

You don't have to do it anymore.
They fixed the Windows Insider app. When you un-enroll, it puts you back into production update servers.

If only I knew it before wiping my phone....

I just the post about that. Now they just have to fix the store so I can get the update. There's something on another site saying it is being worked on.

I may decide to uninstall and reinstall if it doesn't resolve soon.

[MP3Mike]

Are you 100% sure this works?

Yes.

[MP3Mike]

You don't have to do it anymore.
They fixed the Windows Insider app. When you un-enroll, it puts you back into production update servers.

If only I knew it before wiping my phone....

Yep, but be aware that this un-enrolls your MSA account from the Insider program, which removes your "Insider since x" badge. (And will also impact getting Insider builds on other devices.)

So you can avoid a hard-reset, at the cost of your Insider history. MS has said that they are thinking about adding an option to just turn off Insider builds but not leave the Insider program.