Q1: Can't install PiFace Digital software
A1: Please refer to https://wwwthe [[Raspberry_Pi_DIDO_Board#Document_.raspberrypi.org/forums/viewtopic26_Download]] to install manually.php?t=194332
PS(https: We advise use the Raspbian jessie version//www.raspberrypi.org/forums/viewtopic.php?t=194332 for reference)