sudo apt-get install bcm43xx-fwcutter
Password:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  bcm43xx-fwcutter
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 26.6kB of archives.
After unpacking 123kB of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com feisty/universe bcm43xx-fwcutter 1:006-1 [26.6kB]
Fetched 26.6kB in 0s (28.0kB/s)          
Preconfiguring packages ...
Selecting previously deselected package bcm43xx-fwcutter.
(Reading database ... 141293 files and directories currently installed.)
Unpacking bcm43xx-fwcutter (from .../bcm43xx-fwcutter_1%3a006-1_amd64.deb) ...
Setting up bcm43xx-fwcutter (006-1) ...

It prompts you, asking whether you'd like to download the Broadcom firmware
(because it can't be shipped as part of the package). Choose [Yes], to proceed.
You can also archive the link for the future:
  wget http://boredklink.googlepages.com/wl_apsta.o

--12:07:55--  http://boredklink.googlepages.com/wl_apsta.o
           => `wl_apsta.o'
Resolving www-proxy.us.oracle.com... 148.87.19.20
Connecting to www-proxy.us.oracle.com|148.87.19.20|:80... connected.
Proxy request sent, awaiting response... 200 OK
Length: 652,866 (638K) [application/octet-stream]

100%[====================================>] 652,866      154.24K/s    ETA 00:00

12:08:01 (114.44 KB/s) - `wl_apsta.o' saved [652866/652866]


  filename   :  wl_apsta.o
  version    :  3.130.20.0
  MD5        :  e08665c5c5b66beb9c3b2dd54aa80cb3
  microcodes :  2 4 5 11 
  pcms       :  4 5 

  microcode  :  2
  revision   :  0x0127
  patchlevel :  0x000e
  date       :  2005-04-18
  time       :  02:36:27

  microcode  :  4
  revision   :  0x0127
  patchlevel :  0x000e
  date       :  2005-04-18
  time       :  02:36:27

  microcode  :  5
  revision   :  0x0127
  patchlevel :  0x000e
  date       :  2005-04-18
  time       :  02:36:27

  microcode  :  11
  revision   :  0x0127
  patchlevel :  0x000e
  date       :  2005-04-18
  time       :  02:36:27

extracting bcm43xx_microcode2.fw ...
extracting bcm43xx_microcode4.fw ...
extracting bcm43xx_microcode5.fw ...
extracting bcm43xx_microcode11.fw ...
extracting bcm43xx_pcm4.fw ...
extracting bcm43xx_pcm5.fw ...
extracting bcm43xx_initval01.fw ...
extracting bcm43xx_initval02.fw ...
extracting bcm43xx_initval03.fw ...
extracting bcm43xx_initval04.fw ...
extracting bcm43xx_initval05.fw ...
extracting bcm43xx_initval06.fw ...
extracting bcm43xx_initval07.fw ...
extracting bcm43xx_initval08.fw ...
extracting bcm43xx_initval09.fw ...
extracting bcm43xx_initval10.fw ...