BladeRF fx3 firmware and fpga configuration files
are expected to be in /usr/share/Nuand/bladeRF/
by default.

Install the bladerf-firmware-fx3 package and
at least one of:
 bladerf-fpga-hostedx40
 bladerf-fpga-hostedx115
 bladerf-fpga-hostedxa4
 bladerf-fpga-hostedxa9
packages, as appropriate for your hardware.

Or, run `bladeRF-install-firmware` from the bladerf package.
