Update

To update the langpack from inside Firefox, without visiting this site, you can choose between two ways, which are explained below.

Select Strüment > Acesòri and click the North-Western Lombard langpack. (In Firefox 3.0-4.0, please look in the Lenguf panel; in the other versions of Firefox, in the Estensiun panel.)
Right click, choose Cerca 'n'aggiurnament and follow the Firefox instructions.

In the Options (or in the Preferences) window, open the Aggiurnament tab of the Avanzaa panel. Make sure that the Acesòri instalaa option of the Controla in automatich i aggiurnament par section is checked.
When an update is available, follow the Firefox instructions.