/usr/share/doc/openfwwf/README.Debian:
OpenFWWF has so far only been tested with "core revision 5" (as identified by
the module initialisation routine in dmesg for kernels >= 2.6.30) variants of
the following Broadcom AirForce wlan chipsets:
* BCM4306
* BCM4311 revision 1
* BCM4318
* BCM4320
While it might work with later core revisions as well, their RF behaviour is
not validated and might damage the hardware or violate frequency spectrum
regulations.
So I guess you're out of luck with that card.
