Salty - I'll send you a direct e-mail. The soft reboot likely kicked you into the default map...

With the unit off, put your chip back in and power up. You'll need to navigate the menus -- look for a selection that says "map data" or "map file" -- there should be a drop down box / window with a map name in it. The reboot probably set this back to the default map -- it might say "Lowrance." Highlight that window, press enter, scroll down with arrow keys to find the right map file name and hit enter again. When you go back to the screen this should correct the problem.