I had some time trying to work out the details on the ol’ neufbox, so here is a hint for getting it to be in English which makes life easier for non-francophones:

1. Hold down the green button on top of the neufbox until it starts flashing purple (takes about 5 seconds)
   
2. Go to the neufbox Configuration Page Maintenace –> Personnalisation page.
     – usually http://192.168.1.1/6_3
3. Click the “Continuer” button (should still be flashing purple on the box)

   

4. Change the language to Anglais (English) and click “Valider”

    

Done!