Just for completeness (even though I have no experience in what Don's problem is) I made doubly sure that I noted down network IP/Subnet/Gateway settings before doing the update. I then changed the IP settings to DHCP to work with my network, completed all updates and tests which included a few automatic daily calls, and then used nic_config_tivo to put back the network settings exactly how they were when I originally got the TiVo in for repair (which BTW turned out to be a power supply of all things!). I verified the settings had "stuck" by rebooting and using a serial connection to review the settings via nic_config_tivo again using the menu option to view current settings.
The only thing I did not do was put the MAC address back as to what it originally was before the update, and the only thing I can think of is that the router/modem is somehow disallowing external communications as a result of this.... although I doubt this would be the root cause of the problem and I am not conversant with what the TiVo logs to provide the clues hence me advising Don that someone here should be able to assist.
If someone can help Don out that would be appreciated to get him up and running again and cure my red face in thinking I had been careful enough to prevent something like this happening
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