[midoridensha]

>Yup, you need to shutdown firefox, open a terminal, run ‘sudo snap refresh’, wait for it to complete, then re-open firefox.

No, you don't need to do this at all. You need to shut down Firefox, open a terminal, run 'sudo snap remove firefox', then 'sudo apt install firefox', wait for it to complete, then re-open Firefox.

(I might be missing a step here)

[lern_too_spel]

The step you're missing is to add the Firefox PPA. Ubuntu's Firefox deb is just a Snap installation script.

[maccam94]

You also need to futz with apt repo priorities to force it to install the deb package instead of the snap installer -_-