Preparing to unpack .../firefox_52.0+build2-0ubuntu0.16.04.2_armhf.deb ...
Unpacking firefox (52.0+build2-0ubuntu0.16.04.2) over (45.0.2+build1-0ubuntu1) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160415-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for mime-support (3.59ubuntu1) ...
dpkg: error processing package dosfstools (--configure):
 package dosfstools is not ready for configuration
 cannot configure (current status 'half-installed')