See if this clears it out.
Turn on the TV set, set the input to TV , not any of the Video inputs, but the TV tuner input.
Now go to the menu....look in SETUP. Is there a Plug&Play setting or one labeled Initialize or Factory?
Select it, activate it, let the TV clear out the OLD information/data and then set it up again from start to finish. Make sure you select HOME mode, not Store mode.
Once you do that, then see if you get that nag screen still popping up.
If so, we'll try to update the network based updates along with the TV's software/firmware updates.
I think your TV is "thinking" that they were updated...but they weren't due to a weak connection with the update server.
On your TV you get updates using the Tuner, or the Network Lan or Wirelessly or by USB stick.
Lan and USB stick are usually the more reliable ones to use.