I have just reflashed my connex 400xm bt with an image from buildroot and now the hci0 device doesn't come up.

On boot I get a whole bunch of messages like this:

Unknown HCI packet type 00
Unknown HCI packet type 80

And if I do a 'hciconfig hci0 up' I get the same messages and then a

Can't init device hci0: connection timed out

I tried reflashing with the 1163 rootfs and the same thing happens.

Can someone help please?