Pioneer Elite SC-71 setup help, please!

I am trying to remove a setting that is causing my zone 2 to time out after 3 hours. according to pg. 89 of the manual, I should select the following: home menu, system setup, other setup & I should be able to scroll to the zone 2 setting. I am only getting one option when selecting "other setup" option & it is update (but if I select it, it says no update needed). Am I missing a step somewhere?