Hello! On linux Firefox updates through your package manager, so there is usually a 2 to 3 day wait on the update. If my reply helped mark as solution.

The Firefox Release builds for Linux from Mozilla already has updates if you are using the tarballs from say from www.mozilla.org/firefox/all

Make sure the Firefox folder has read/write permission if you use this version so Firefox can get updates.

Mkll said

Hello! On linux Firefox updates through your package manager, so there is usually a 2 to 3 day wait on the update.

Only if you acquired Firefox this way and not the tarballs from say www.mozilla.org/firefox/all/

Third-party builds this way are not updated by Mozilla but are provided by the Linux distro you are using. Sometimes they are fast or slow in response.