How do I install Firefox 51.0 on UbuntuMATE 22.04
by XYZB0RG from LinuxQuestions.org on (#6GP88)
I need to install an older version of Firefox for compatibility with the Adobe Flash plugin. I'd do my own research on this, but most results are outdated for older versions of UbuntuMATE so asking firsthand seems better. Where do I install Firefox 51.0 and how?