Rated 5 out of 5 stars

per janffm el abr. 12, 2016 · enllaç permanent

very helpfull add - it is still working if you change the number the "maxVerson" (e.g. 55) in the install.rdf-file. You only need to rename the xpi-file in zip-file, open install.rdf with an editor, change Nr. und store it. rename back xpi. Have fun!