Slowroll Firefox upgrade (!) from 155.x to 154.x

[mattm3a]

I ran the standard zypper dup to update a slowroll distribution today. Firefox went from v155 to v154.0. There is apparently a check for your Firefox profile that forces you to create a new profile (bookmarks, extensions, etc.).

Two questions:

1. Why has the version been downgraded?
2. What happens to profiles when Slowroll (re)releases v155+? Does creating a new profile in v154 destroy the existing v155 one? Or can a later version recover the old profile?

[deano_ferrari]

Good questions. I ran into that today, but haven’t had time to investigate further yet.

[pier_andreit]

run firefox -allow-downgrade

[deano_ferrari]

Any existing profile(s) should remain.

[shundhammer]

@pier_andreit

run firefox -allow-downgrade

Yup - happened to me, too, and a web search on my Android tablet gave me that same solution, and it worked.

But really, Mozilla should offer this as an additional option in that warning popup; just telling the user to just create a new profile and thus nuking all previous settings is the pinnacle of adding insult to injury.

[shundhammer]

Firefox History in Slowroll 08/2026 + 09/2026

[shundhammer]

Firefox 155.0.1 is Back

Today’s Slowroll updates brought the newer Firefox back:

Looks like that downgrade to 154.0.1 was an accident that was just fixed.