Copy your FreeBSD img to sd card @MacOS

  1. Plugin your sd card
  2. Open a terminal as sudo/root/admin
  3. $ diskutil list // Identify the /dev/diskNUMBER of the sd card
    $ diskutil unmountDisk /dev/diskNUMBER
    $ sudo dd bs=1m if=FreeBSD-11.0-CURRENT-arm-armv6-RPI-B-20150217-r278908.img of=/dev/diskNUMBER

How to build your own freebsd raspberry pi (arm6) image: