Hello Allen and Surfer1000

It might be worth adding that when I forced LU update to fail, I did so be powering off the router. The router always takes several minutes to re-establish its connection from power up, and LU had timed out before the connection back was up. I've tried this since, and LU seems to time out with an update failure a few minutes after the line is lost.

Again, thanks for you tenacity with this problem.

Accipiter