PC Engines APU, Arch Linux - Ubertooth
Install and update firmware
pacman -S cmake
curl -OL https://github.com/greatscottgadgets/libbtbb/archive/2017-03-R2.tar.gz
curl -OL https://github.com/greatscottgadgets/ubertooth/releases/download/2017-03-R2/ubertooth-2017-03-R2.tar.xz
tar zxvf 2017-03-R2.tar.gz
cd libbtbb-2017-03-R2
mkdir build
cd build
cmake ..
make
make install
tar xvf ubertooth-2017-03-R2.tar.xz
cd ubertooth-2017-03-R2/host
mkdir build
cd build
cmake ..
make
make install
echo "/usr/local/lib" >>/etc/ld.so.conf.d/local.conf
ldconfig
cd ubertooth-2017-03-R2/ubertooth-one-firmware-bin/
ubertooth-dfu -d bluetooth_rxtx.dfu -r