How to Build a BCM963xx Router Image from the Consumer Release
Here are the steps that a consumer can follow to build a Broadcom BCM963xx DSL router image from the BCM963xx
consumer release archive. Replace ?.?? with the release number.
1. Install the BCM963xx ?.??L.01 consumer release.
$ su
# mkdir /tmp/consumer
# cd /tmp/consumer
# tar xvfz bcm963xx_?.??L.01_consumer_release.tar.gz
# ./consumer_install
2. Build the desired image.
# cd /opt/bcm963xx_router
# make PROFILE=96368GW
-- or --
# make PROFILE=96348R
-- or --
# make PROFILE=96345GW
-- or --
# make PROFILE=96348GW
-- or --
# make PROFILE=96338R

You can upload image to the router on web as follows:

1. Launch the BCM963xx DSL router Web interface by connecting a Web browser to 192.168.1.1.
2. Select the Management => Update Software menu item.
3. In the “Software File Name:” edit box, enter or browse for an image in the /opt/bcm963xx_router/images directory.
4. Click on the “Update Software” button.
5. The BCM963xx DSL router will reboot using the image that was built from the consumer release.

Or, you can use tftp install new files on the ram disk as follows:
1.Enable local administration, telnet support.
2.Telenet to the router
3.Login. (default username and password is admin)
4.tftp get serverip:serverfile localfile, serverfile is the name of the file residing 
  on the server and localfile is the localfile name.