As you know, Firefox has been update to 57.00 but some extensions doesen't work for me. For that i want to pass 56.00 and i remove Firefox 57.00, after that i download Firefox 56.00 version and lastly i copy Firefox 56.00 folder, to there /usr/local directory.
When i give the firefox command, on command line it's work, Firefox open but there is a no icon launcher.
When i search the Firefox starter icon, i can't found anything.
Now how i can create a launcher for Firefox?
PS: I am not using Unity, i'm using XFCE.