1. Modem_HW51_915_NIA.hex - firmware for Modem HW 5.1 (NIA architecture).
   Update it from the Dashboard of this release (Firmware menu, over USB)

2. DFU - folder with the DFU file of the same firmware (ST DFU mode, recovery
   only)

Update the modem after all beacons and the RHU (see !_README.txt). After the
update the Dashboard applies the default settings by itself - wait until the
modem button shows "-d"
