New version shown but won't install

This is probably a newbie/obvious thing, but I’ve got to ask.

Having heard that Firefox 153 shipped, I looked at flathub and saw that version number, but my GUI updater (Discover, on Fedora Kinoite) didn’t see a new version, so I went to the command line.

flatpak remote-info --log flathub org.mozilla.firefox shows version 153 with considerable detail, and 7 earlier versions with less detail.

flatpak update org.mozilla.firefox says “Nothing to update.”

Web research showed a method to steer the update to a particular version, so I tried this:

flatpak update – \ commit=eef9e6319ad42c235c87c56c99b81252b9a6f393aa9eab104e5fb788acedb3cf \ org.mozilla.firefox

This generated a surprising message:

Looking for updates…
error: Server returned status 404

So I wonder: why is a version that looks available actually not available?

As it sounds like an XY problem to me, can you show the output of flatpak info org.mozilla.firefox?

Sure:

Firefox - Web Browser

        ID: org.mozilla.firefox
       Ref: app/org.mozilla.firefox/x86_64/stable
      Arch: x86_64
    Branch: stable
   Version: 152.0.6
   License: GPL-3.0+
    Origin: fedora
Collection: 

Installation: system
Installed Size: 324.3 MB
Runtime: org.fedoraproject.Platform/x86_64/f44
Sdk: org.fedoraproject.Sdk/x86_64/f44

    Commit: 3d50fff7968168a675544299d4ea997d7f19dc6cac21f42a9af72958ff3d31f9
   Subject: Export org.mozilla.firefox
      Date: 2026-07-19 17:36:38 +0000
    Alt-id: 36387b5c77f51095db701fd94e4f124bf5443b7ad97d0676c8e8a51a94fa395d

As you may see, you have firefox installed from fedora flatpak repo while you’re searching for update on flathub. Either remove fedora firefox and install new from flathub or wait for fedora update.

Thank you, Erick555. Too many flathubs!