New knoppix-installer tool on 5.0.1

How to use new knoppix-installer tool on the 5.0.1.
I could not find for that documentation.

I want to install a wireless LAN card driver into 5.0.1 Live CD by the tool.

The driver is bcm43xx-microcode5.fw. I know that it should be included in 5.0.1. But I could not find it at
/usr/lib/firmware directory.
I got an error message “bcm43xx: Error: bcm43xx-microcode5.fw not available or load failed.�
I guess my PC is 64bit CPU. Due to this, I will need to install the drive for 64 bit support also.
I've already found bcm43xx-fwcutter tool and the driver.

Thank you!! :(