The Firebug team released Firebug 2.0.12. This is a maintenance release ensuring compatibility with latest Firefox releases.
The beta channel on AMO is not updated due to a new signing process (support for beta channels is currently in open beta phase). It’s recommended to use standard release channel on AMO (if you don’t know what AMO beta channel is, you are most likely using the right release channel).
Firebug 2.0.12 is compatible with Firefox 30 – 42
Please post feedback in the newsgroup, thanks.
Jan ‘Honza’ Odvarko