Orca Updating Firevox, but can't get back

[hermann <steppenwolf2 onlinehome de>]

Hi all,
I want to update Firevox to version 3.0; in order to do this, I must get
back Orca to use Firefox 2.x.
I moved the scripts Firefox.py and Firefox.pyc from my
~/.orca/orca-scripts directory, but this doesn't bring Orca back to
work.
Firefox is still treated as a self voicing application, and I don't know
why?
Any tips?
Regards
Hermann