For example, you can set invalid network settings (DNS, IP, subnet mask, gateway etc.) and make some additional script in samygo, which will do two simple steps after root:
- disable autoupdating functionality
- change all network settings to correct one (and those changes should not be saved. I mean, after reboot your TV should start with invalid network setting and some script from samygo should change it every time and do it only AFTER disabling autoupdates)