Cubietruck install - no wlan?

["Andrew M.A. Cater" <amacater@galactic.demon.co.uk>]

Clean install of Jessie  - no wlan appears to be detected even after installing firmware-brcm80211 and adding the text file.

Install of Debian using Debian SD card image and a USB stick with hd-media and debian-arm CD1.

Wireless _used_ to work :( now not detected - no wireless extensions appear

Anybody seen similar?

iwconfiig

shows

lo	no wireless extensions

eth0	no wireless extensions

/etc/network interfaces is

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

# The secondary network interface
auto wlan0
iface wlan0 inet dhcp

All the best,

AndyC