Problem with bcm43xx-80211

[Andrew Robinson]

I recently upgraded to the latest kernel on FC6, 2.6.22.1-32.fc6, and 
when I did, my wireless failed to initialize. I posted a query here, and 
it was suggested I needed to upgrade to version 4 of the bcm43xx driver. 
I found this procedure to do so:

# you need to be root
wget http://downloads.openwrt.org/sources/broadcom-wl-4.80.53.0.tar.bz2
tar -xjvf broadcom-wl-4.80.53.0.tar.bz2
bcm43xx-fwcutter -w /lib/firmware/ broadcom-wl-4.80.53.0/kmod/wl_apsta.o

When I run the bcm43xx-fwcutter command, I get this error:

Sorry, the input file is either wrong or not supported by bcm43xx-fwcutter.
This file has an unknown MD5sum 9207bc565c2fc9fa1591f6c7911d3fc0.

Anyone know what I'm doing wrong?

Thanks!

Andrew Robinson