Does Flash Player work on Android 5 with Firefox 48 I have an Amazon Fire (KFFOWI) with CM12.1 installed and have Firefox as my browser. I have installed the archive flash player 11.1.115.81 but, when I try to use it, all I get is "A plugin is required to display this content".

I've read many things that suggest that it should work but they are probably stale and out of date.

So, as of October 2016, does the Flash player work on Android 5.1 and, if so, how does one get it working?
Adobe does not support Flash on Android beyond 4.0 but that does not mean that it won't work. The last available version is 11.1 which is not on Google Play so must be sideloaded from the Flash Player Archive.

Flash support in Firefox is being phased out and Chrome also. Other browsers, like Dolphin, continue to support Flash and work with the plugin installed from the archive.