RPi2 with RedBear IoT pHat cannot boot

[gabor at zahemszky.hu]

Hi!

I've got a brand new IoT pHat (*) and tried it with an RPi2 and
FreeBSD 11.0-RC2. The problem is, that the combination cannot boot.
(The same machine boots without any problem without that HaT.)
The boot halted with the message:
...
Booting [/boot/kernel/kernel]
No valid device tree blob found!
Tpye '?' for a list ...
loader>

What should I do, if I'd like to use them together?

Thanks,
Gábor

(*) https://redbear.cc/product/iot-phat.html
This Hat has the same Bluetooth and Wifi chip, which we could find
on the RPi3.