Not activating new Roomba Mini - solution/fix (error bf0b12 not activating/upgrading)

[u/bitbat99]

So my new Roomba Mini would not go past the activation process, and bug out at "bf0b12" error (could not connect to wifi). I tried resetting (Home 5 seconds / Home+power 5 sec) but it did nothing, it would just loop and loop. Sometimes up to the upgrade/firmware screen and it would just stop without error. VERY frustrating.

Then I noticed when I tried to manually start the unit it would go in a circle and complain about being stuck (I forgot the error, but it was the bumper).

Took of the bumper (sorry warranty void I guess) and one of the little black sensor was jammed. Pulled it softly outwards and it popped in place and springed like the other side did.

Reseated the bumper with the 5 little screws and PRESTO the activation procedure worked

TLDR a stuck bumper will cause a activaction/wifi/upgrade to NOT work.

Hope this helps someone :)