Hi & Welcome to the forum depark1
Here is a quote from One of the top guys on this forum. This is called "forced simulator mode" and has to be done to maintain changes made to the menus
Quote from: Humminbird_Greg on 13 April 2011, 04:13:52
Actually it is the MENU button and you have to press it while the unit is still showing the title screen (“Humminbird 998c Si”). Than you will get the menu options to choose "Simulator" from that screen.
Regards
Geoff
"Downunder"