When you followed the instructions in the link did you get the correct file details of #-rw-r--r-- 1 0 0 882 Sep 21 21:17 Auckland

No, I get a result of 870, not 882

Running the code in the link I can see lots of error messages scrolling down the screen, then the Tivo reboots, time unchanged, tried it several times now, much to wife's annoyance!