The Firebug team released Firebug 2.0.17. This is a maintenance release ensuring compatibility with latest Firefox releases.
The beta channel on AMO is also updated.
Firebug 2.0.17 is compatible with Firefox 30 – 49
Finally, read more about Unifying Firebug & Firefox DevTools.
Please post feedback in the newsgroup, thanks.
Jan ‘Honza’ Odvarko