Thanks, So the 3 terrain files can't all be installed on the 396 at the
same time? ... Aaron

wrote in message news:Cv5mf.109$z21.74@fed1read04...
AaronK wrote:
Thanks for the tip!

What is the process to overwrite the terrain data bases? Can this cause
any problems with other date including user data on the 396? ... Aaron

The terrain database is simply a database. It is independent of your user
waypoints, routes, and other databases.

The only time you have to protect your user data is when you upgrade the
firmware. And, with the 296/396 that is not usually a problem unless you
crash a firmware update.

It always pay to keep your routes and user waypoints duplicated via
MapSource to your desktop or laptop.