This video will show you how to change Comcast config file using firmware Sigma 1.7. For tools go here http://www.mediafire.com/?sharekey. SB5120 boot (config) file Background: Northern California (Sacramento). Reviews: ·Comcast: You have the wrong config file,you need to call in and get it changed. If you can find one that knows how to change the boot file on your cable modem the more power to you. The only way to get the port unblocked is to call Comcast Customer. Finding the config boot file for my surfboard 5101 modem - Comcast.
Getting Comcast to unblock a port on your cable modem
Finding the config boot file for my surfboard 5101 modem Has Comcast taken to hiding the config file to the Motorola Surfboard 5101 modem if I access the log page.