If it's not listed on Firefox download site then it's not supported. https://www.mozilla.org/en-US/firefox/134.0.2/system-requirements/

''<p>Sando [[#question-1490119|said]]</p>'' <blockquote>Will Firefox work on the Calyx OS? </blockquote> Calyx OS is a Android based OS so if any version of Firefox were to work, it would be the Firefox for Android version and not desktop Firefox as mark above thinks. You may be able to install Android Firefox from the F-Droid app store or by side loading apk from https://archive.mozilla.org/pub/fenix/releases/134.0.2/android/ .Fennix is the codename for Firefox for Android.