Michael Buesch 27892ef741 fwcutter/make: Avoid _DEFAULT_SOURCE warning 6 years ago
debian 8dce532979 fwcutter: Bump version 9 years ago
.gitignore ce65ccbd38 fwcutter: Update .gitignore 13 years ago
COPYING 6d2b4e5f11 b43-fwcutter: add COPYING file 13 years ago
Makefile 27892ef741 fwcutter/make: Avoid _DEFAULT_SOURCE warning 6 years ago
README 25b3c27189 fwcutter: Update URLs 11 years ago
b43-fwcutter.1 d5a5fc3554 fwcutter: Update man page 9 years ago
fwcutter.c bc3140bff6 fwcutter: Update copyright information 9 years ago
fwcutter.h 30e3fca2e4 Build on Mac OS 10.9 by using libkern/OSByteOrder.h 10 years ago
fwcutter_list.h 3f46e61606 fwcutter: Add firmware 6 years ago
makerelease.sh aafdafff01 fwcutter: Fix typo in release script 11 years ago
md5.c 9943900813 Fix memset size argument error. 10 years ago
md5.h 5b68bd4720 fwcutter: Fix type punning 11 years ago
mklist.py 41859f7435 Update my e-mail address 12 years ago


BCM43XX Linux Driver Project

About this software


b43-fwcutter is a tool to extract firmware from binary Broadcom 43xx driver files.


b43-fwcutter FILE extracts the firmware from a source FILE to
the current directory, creating a directory
"b43" or "b43legacy" with files in it.
b43-fwcutter -i FILE identify the driver file; print information
but don't extract.
b43-fwcutter -w /tmp FILE extract and write firmware to /tmp.
b43-fwcutter -l prints a list of supported driver source files.

After extraction, copy the "b43" or "b43legacy" directory to your firmware
directory (usually /lib/firmware or similar, see below). Alternatively you
can use the -w option to b43-fwcutter.

Different distributions use different directories to load firmware from.
If the driver complains about missing firmware files look for the correct
directory. For some distributions you have to use /lib/hotplug/firmware
or /usr/lib/hotplug/firmware but other directories are also possible.

Because firmware file are stored in big endian, extraction doesn't depend
on the system you're using. You can use extracted firmware from any driver
on any system and also copy the extracted files to any other system (e.g.
if extraction on the target system isn't feasible.)

Where can I find some driver source files?

Please check the references at

It is recommended that you extract firmware for both b43 and b43legacy in
order to support both types of cards on your system.