This post explains the procedure to disable TR069 on a Youhua PT926G fiber optic modem, to prevent China Telecom from pushing config/firmware updates, and void your change of switching to bridging mode or setting port-forward rules. In the WAN settings of the management portal of this modem, the TR069 connection can neither be modified nor removed. But with a simple patch on the management portal's code, you can break the limitation on the modem. First, you should follow my previous post: Hacking a Youhua PT926G Fiber Optic Modem , to obtain the Telnet Root password. Then Telnet in, run su , and type in the password to get to Root Shell. When you do that correctly, the command-line will prompt # . Then follow these steps: Type cp /home/httpd/web/net_eth_links.asp /var/ and hit Enter....