echo 0x0200 > bcdUSB # USB2
mkdir -p strings/0x409
-echo "deadbeef00000001" > strings/0x409/serialnumber
+echo `cat /proc/device-tree/serial-number` > strings/0x409/serialnumber
echo `uname -r` > strings/0x409/manufacturer
echo `hostname -s` > strings/0x409/product