Folks,
For Your Information:
I'm currently running 4.700 on my 1197c.
Before I went back to 4.700, I added some new Waypoints, using some of the newer Icons that were included in the Waypoint management system.
These newer icons did not exist at the time the 4.700 software was developed.
These Waypoints at first did not show up at all on my unit.
I had to bring them into HumminbirdPC and change the Icons to older ones
before they would display.
I'm damned lucky this didn't lock my system up.